United States admiral; Father of the Nuclear Navy From Wikiquote, the free quote compendium
Hyman George Rickover, U.S. Navy (27 January1900 – 8 July1986) was a United States Navyadmiral who directed the original development of naval nuclear propulsion and controlled its operations for three decades as director of Naval Reactors. Rickover built the world's first atomic power plant in only 4.5 years, starting as a Captain in 1950 and building a team that would beat other branches of the military and all private industry to the task by launching the world's first nuclear powered submarine in 1955. In addition, he oversaw the development of the Shippingport Atomic Power Station, the world's first commercial pressurized water reactor used for generating electricity. Rickover is known as the "Father of the Nuclear Navy".
I'll be philosophical. Until about two billion years ago, it was impossible to have any life on earth; that is, there was so much radiation on earth you couldn't have any life — fish or anything. Gradually, about two billion years ago, the amount of radiation on this planet—and probably in the entire system—reduced and made it possible for some form of life to begin... Now when we go back to using nuclear power, we are creating something which nature tried to destroy to make life possible... Every time you produce radiation, you produce something that has a certain half-life, in some cases for billions of years. I think the human race is going to wreck itself, and it is important that we get control of this horrible force and try to eliminate it... I do not believe that nuclear power is worth it if it creates radiation. Then you might ask me why do I have nuclear powered ships. That is a necessary evil. I would sink them all. Have I given you an answer to your question?
On the hazards of nuclear power. Testimony to Congress (28 January 1982); published in Economics of Defense Policy: Hearing before the Joint Economic Committee, Congress of the United States, 97th Cong., 2nd sess., Pt. 1 (1982)
I am not proud of the part I played in it. I did it because it was necessary for the safety of this country. That's why I am such a great exponent of stopping this whole nonsense of war. Unfortunately limits — attempts to limit war have always failed. The lesson of history is when a war starts every nation will ultimately use whatever weapon it has available. ... Therefore, we must expect that if another war — a serious war — breaks out, we will use nuclear energy in some form.
On his reasoning in developing the nuclear arsenal of the US and on the prospects of nuclear war. Testimony to Congress (28 January 1982); published in Economics of Defense Policy: Hearing before the Joint Economic Committee, Congress of the United States, 97th Cong., 2nd sess., Pt. 1 (1982)
If you are going to sin, sin against God, not the bureaucracy. God will forgive you but the bureaucracy won't.
As quoted in The New York Times (3 November 1986)
Paper Reactors, Real Reactors (1953)
"Paper Reactors, Real Reactors" (5 June 1953); Stating they were comments from the early 1950's Rickover read some of these statements as part of his testimony before Congress, published in AEC Authorizing Legislation: Hearings Before the Joint Committee on Atomic Energy (1970), p. 1702
An academic reactor or reactor plant almost always has the following basic characteristics: (1) It is simple. (2) It is small. (3) It is cheap. (4) It is light. (5) It can be built very quickly. (6) It is very flexible in purpose. (7) Very little development will be required. It will use off-the-shelf components. (8) The reactor is in the study phase. It is not being built now.
On the other hand a practical reactor can be distinguished by the following characteristics: (1) It is being built now. (2) It is behind schedule. (3) It requires an immense amount of development on apparently trivial items. (4) It is very expensive. (5) It takes a long time to build because of its engineering development problems. (6) It is large. (7) It is heavy. (8) It is complicated.
The tools of the academic designer are a piece of paper and a pencil with an eraser. If a mistake is made, it can always be erased and changed. If the practical-reactor designer errs, he wears the mistake around his neck; it cannot be erased. Everyone sees it.
The academic-reactor designer is a dilettante. He has not had to assume any real responsibility in connection with his projects. He is free to luxuriate in elegant ideas, the practical shortcomings of which can be relegated to the category of "mere technical details." The practical-reactor designer must live with these same technical details. Although recalcitrant and awkward, they must be solved and cannot be put off until tomorrow. Their solution requires manpower, time and money.
Unfortunately for those who must make far-reaching decisions without the benefit of an intimate knowledge of reactor technology, and unfortunately for the interested public, it is much easier to get the academic side of an issue than the practical side. For a large part those involved with the academic reactors have more inclination and time to present their ideas in reports and orally to those who will listen. Since they are innocently unaware of the real but hidden difficulties of their plans, they speak with great facility and confidence. Those involved with practical reactors, humbled by their experiences, speak less and worry more.
Yet it is incumbent on those in high places to make wise decisions and it is reasonable and important that the public be correctly informed. It is consequently incumbent on all of us to state the facts as forthrightly as possible.
US Naval Postgraduate School Address (1954)
Address delivered to US Naval Postgraduate School (16 March 1954)
Some of the ideas I try to get across to the people who work for me are the following:
1. More than ambition, more than ability, it is rules that limit contribution; rules are the lowest common denominator of human behavior. They are a substitute for rationalthought.
2. Sit down before fact with an open mind. Be prepared to give up every preconceived notion. Follow humbly wherever and to whatever abyss Nature leads, or you learnnothing. Don't push out figures when facts are going in the opposite direction.
3. Free discussion requires an atmosphere unembarrassed by any suggestion of authority or even respect. If a subordinate always agrees with his superior he is a useless part of the organization. In this connection there is a story of Admiral Sims when he was on duty in London in World War I. He called a conscientious hard-working officer in to him to explain why he was dissatisfied with the officer's work. The officer blushed and stammered when Sims pointed out that in all the time they had been working together the officer had never once disagreed with Sims.
4. All men are by nature conservative but conservatism in the military profession is a source of danger to the country. One must be ready to change his line sharply and suddenly, with no concern for the prejudices and memories of what was yesterday. To rest upon formula is a slumber that, prolonged, means death.
6. Do not regard loyalty as a personal matter. A greater loyalty is one to the Navy or to the Country. When you know you are absolutely right, and when you are unable to do anything about it, complete military subordination to rules becomes a form of cowardice.
7. To doubt one's own first principles is the mark of a civilized man. Don't defend past actions; what is right today may be wrong tomorrow. Don't be consistent; consistency is the refuge of fools.
8. Thoughts arising from practical experience may be a bridle or a spur.
10. Avoid over-coordination. We have all observed months-long delays caused by an effort to bring all activities into complete agreement with a proposed policy or procedure. While the coordinating machinery is slowly grinding away, the original purpose is often lost. The essence of the proposals is being worn down as the persons most concerned impatiently await the decision. The process has been aptly called coordinating to death.
11. A system under which it takes three men to check what one is doing is not control; it is systematic strangulation.
12. A man, by working 24 hours a day, could multiply himself 3 times. To multiply himself more than 3 times the only recourse is to train others to take over some of his work.
Voltaire once said: "Not to be occupied and not to exist are one and the same thing for a man." With those few words he captured the essence of a purpose in life: to work, to create, to excel, and to be concerned about the world and its affairs.
The question of what we can do to give purpose or meaning to our lives has been debated for thousands of years by philosophers and common men. Yet today we seem, if anything, further from the answer than before. Despite our great material wealth and high standard of living, people are groping for something that money cannot buy.
I do not claim to have a magic answer. But I believe there are some basic principles of existence, propounded by thinkers through the ages, which can guide us toward the goal of finding a purpose in life. Among these principles of existence, responsibility is the one which forces man to become involved. Acceptance of responsibility means that the individual takes upon himself an obligation. Responsibility is broad and continuous. None of us are ever free of it, even if our work is unsuccessful. Responsibility implies a commitment to self which many are not willing to make; they are strongly attracted to accepting a course of action or direction for their lives imposed by an external source. Such a relationship absolves the individual from the personal decision-making process. He wraps himself in the security blanket of inevitability or dogma, and need not invest the enormous amounts of time, effort and, above all, the thought required to make creative decisions and meaningfully participate in the governance of his life. Responsibility also implies a commitment to others, or as Confucius taught, each of us is meant to rescue the world. It is the business of little minds to shrink from this task or to go about it without enthusiasm. Neither art, nor science, nor any of the great works of humanity would ever come into being without enthusiasm. The sense of responsibility for doing a job right seems to be declining. In fact, the phrase "I am not responsible" has become a standard response in our society to complaints on a job poorly done. This response is a semantic error. Generally what a person means is: "I cannot be held legally liable." Yet, from a moral or ethical point of view, the person who disclaims responsibility is correct: by taking this way out he is truly not responsible; he is irresponsible.
The task of finding a purpose in life also calls for perseverance. I have seen many young men who rush out into the world with their messages, and when they find out how deaf the world is, they withdraw to wait and save their strength. They believe that after a while they will be able to get up on some little peak from which they can make themselves heard. Each thinks that in a few years he will have gained a standing, and then he can use his power for good. Finally the time comes, and with it a strange discovery: he has lost his horizon of thought. Without perseverance, ambition and a sense of responsibility have evaporated.
Happiness comes from the full use of one's power to achieve excellence. Life is potentially an empty hole, and there are few more satisfying ways of filling it than achieving and exercising excellence. This principle of excellence is one which Americans seem to be losing, and at a time when the Nation stands in need of it. A lack of excellence implies mediocrity. And in a society that is willing to accept a standard of mediocrity, the opportunities for personal failure are boundless. Mediocrity can destroy us as surely as perils far more famous. It is important that we distinguish between what it means to fail at a task and what it means to be mediocre. There is all the difference in the world between the life lived with dignity and style which ends in failure, and one which achieves power and glory, yet is dull, unoriginal, unreflective, and mediocre. In a real sense, what matters is not so much whether we make a lot of money or hold a prestigious job; what matters is that we seek out others with knowledge and enthusiasm — that we become people who can enjoy our own company.
In our system of society, no authority exists to tell us what is good and desirable. We are each free to seek what we think is good in our own way. The danger is that where men compromise truth and let decency slip, they eventually end up with neither. A free society can survive only through men and women of integrity. Fortunately, there still exist human beings who remain concerned about moral and ethical values and justice toward others. These are the individuals who provide hope of the ultimate realism that is marked by a society's capacity to survive rather than be eventually destroyed. Ethics and morals are basically individual values. A society that does not possess an ethical dimension will find it almost impossible to draft a law to give it that dimension. Law merely deters some men from offending and punishes others from offending. It does not make men good. It is important also to recognize that morals and ethics are not relative; they do not depend on the situation. This may be the hardest principle to follow in working to achieve goals. The ends, no matter how worthy they appear, cannot justify just any means.
Life is not meaningless for the man who considers certain actions wrong simply because they are wrong, whether or not they violate the law. This kind of moral code gives a person a focus, a basis on which to conduct himself. Certainly there is a temptation to let go of morals in order to do the expedient thing. But there is also a tremendous power in standing by what is right. Principle and accomplishment need not be incompatible. A common thread moves through all the principles I have discussed: It is the desire to improve oneself and one's surroundings by actively participating in life. Too many succumb to the emotional preference of the comfortable solution instead of the difficult one. It is easy to do nothing. And to do nothing is also an act; an act of indifference or cowardice. A person must prepare himself intellectually and professionally and then use his powers to their fullest extent.
It is important to be both a thinker and a doer and to have sense of responsibility. A theoretician who has no responsibility is withdrawn from the real world. His recommendations are made in a vacuum. Because he is not required to carry them out, they may be irresponsible and do harm. Similarly, those in charge — the doers — are often devoid of any real thought. To find a purpose to life, on must be willing to act, to put excellence in one's work, and have concern for what is right ahead of personal safety. Life must be felt, not observed.
I believe it is the duty of each of us to act as if the fate of the world depended on him. Admittedly, one man by himself cannot do the job. However, one man can make a difference. Each of us is obligated to bring his individual and independent capacities to bear upon a wide range of human concerns. It is with this conviction that we squarely confront our duty to prosperity. We must live for the future of the human race, and not of our own comfort or success.
For anyone seeking meaning for his life a figure from Greek mythology comes to mind. It is that of Atlas, bearing with endless perseverance the weight of the heavens on his back. — Atlas, resolutely bearing his burden and accepting his responsibility that gives us the example we seek. To seek out and accept responsibility; to persevere; to be committed to excellence; to be creative and courageous; to be unrelenting in the pursuit of intellectual development; to maintain high standards of ethics and morality; and to bring these basic principles of existence to bear through active participation in life — these are some of my ideas on the goals which must be met to achieve meaning and purpose in life. And finally, the man who knows his purpose in life accepts praise humbly. He knows whatsoever talents he has were given him by the Lord and that these talents must be developed and used. In this way man renders thanks for the Lord's gift — and finds meaning in his life.
If history has any meaning for us, it shows that men will continue to use the best weapons they have to win. Throughout history, even when men have established leagues to prevent war, they have nevertheless resorted to it. Utopia is still beyond the horizon. Above all, we should bear in mind that our liberty is not an end in itself; it is a means to win respect for human dignity for all classes of our society.
I do not have regrets. I believe I helped preserve the peace for this country. Why should I regret that? What I accomplished was approved by Congress — which represents our people. All of you live in safety from domestic enemies because of security from the police. Likewise, you live in safety from foreign enemies because our military keeps them from attacking us. Nuclear technology was already under development in other countries. My assigned responsibility was to develop our nuclear navy. I managed to accomplish this.
The Rickover Effect (1992)
Quotations of Rickover from The Rickover Effect (1992) by Theodore Rockwell, ISBN 1-55750-702-3
It is said that a wise man who stands firm is a statesman, and a foolish man who stands firm is a catastrophe.
Nothing so sharpens the thought process as writing down one's arguments. Weaknesses overlooked in oral discussion become painfully obvious on the written page.
The Quakers have an excellent approach to thinking through difficult problems, where a number of intelligent and responsible people must work together. They meet as equals, and anyone who has an idea speaks up. There are no parliamentary procedures and no coercion from the Chair. They continue the discussion until unanimity is reached. I want you guys to do that. Get in a room with no phones and leave orders that you are not to be disturbed. And sit there until you can deal with each other as individuals, not as spokesmen for either organization.
You know the answer to that, don’t you. You don’t need me to tell you.
Any one detail, followed through to its source, will usually reveal the general state of readiness of the whole organization.
I believe it is the duty of each of us to act as if the fate of the world depended on him. Admittedly, one man by himself cannot do the job. However, one man can make a difference... We must live for the future of the human race, and not for our own comfort or success.
One must create the ability in his staff to generate clear, forceful arguments for opposing viewpoints as well as for their own. Open discussions and disagreements must be encouraged, so that all sides of an issue are fully explored.
In Greek mythology, Antaeus was a giant who was strong as long as he had contact with the earth. When he was lifted from the earth he lost strength. So it is with engineers. They must not become isolated from the real world...
The Devil is in the details, but so is salvation.
As a guide to engineering ethics, I should like to commend to you a liberal adaptation of the injunction contained in the oath of Hippocrates that the professional man do nothing that will harm his client. Since engineering is a profession which affects the material basis of everyone’s life, there is almost always an unconsulted third party involved in any contact between the engineer and those who employ him — and that is the country, the people as a whole. These, too, are the engineer’s clients, albeit involuntarily. Engineering ethics ought therefore to safeguard their interests most carefully. Knowing more about the public effects his work will have, the engineer ought to consider himself an “officer of the court” and keep the general interest always in mind.
The man in charge must concern himself with details. If he does not consider them important, neither will his subordinates. Yet “the devil is in the details.” It is hard and monotonous to pay attention to seemingly minor matters. In my work, I probably spend about ninety-nine percent of my time on what others may call petty details. Most managers would rather focus on lofty policy matters. But when the details are ignored, the project fails. No infusion of policy or lofty ideals can then correct the situation.
What it takes to do a job will not be learned from management courses. It is principally a matter of experience, the proper attitude, and common sense — none of which can be taught in a classroom... Human experience shows that people, not organizations or management systems, get things done.
It is a human inclination to hope things will work out, despite evidence or doubt to the contrary. A successful manager must resist this temptation. This is particularly hard if one has invested much time and energy on a project and thus has come to feel possessive about it. Although it is not easy to admit what a person once thought correct now appears to be wrong, one must discipline himself to face the facts objectively and make the necessary changes — regardless of the consequences to himself. The man in charge must personally set the example in this respect. He must be able, in effect, to "kill his own child" if necessary and must require his subordinates to do likewise.
When doing a job — any job — one must feel that he owns it, and act as though he will remain in that job forever. He must look after his work just as conscientiously, as though it were his own business and his own money. If he feels he is only a temporary custodian, or that the job is just a stepping stone to a higher position, his actions will not take into account the long-term interests of the organization. His lack of commitment to the present job will be perceived by those who work for him, and they, likewise, will tend not to care. Too many spend their entire working lives looking for the next job. When one feels he owns his present job and acts that way, he need have no concern about his next job.
To do a job effectively, one must set priorities. Too many people let their "in" basket set the priorities. On any given day, unimportant but interesting trivia pass through an office; one must not permit these to monopolize his time. The human tendency is to while away time with unimportant matters that do not require mental effort or energy. Since they can be easily resolved, they give a false sense of accomplishment. The manager must exert self-discipline to ensure that his energy is focused where it is truly needed.
One must permit his people the freedom to seek added work and greater responsibility. In my organization, there are no formal job descriptions or organization charts. Responsibilities are defined in a general way, so that people are not circumscribed. All are permitted to do as they think best and to go to anyone and anywhere for help. Each person is then limited only by his own ability.
As subordinates develop, work should be constantly added so that no one can finish his job. This serves as a prod and a challenge. It brings out their capabilities and frees the manager to assume added responsibilities. As members of the organization become capable of assuming new and more difficult duties, they develop pride in doing the job well. This attitude soon permeates the entire organization.
Responsibility is a unique concept... You may share it with others, but your portion is not diminished. You may delegate it, but it is still with you... If responsibility is rightfully yours, no evasion, or ignorance or passing the blame can shift the burden to someone else. Unless you can point your finger at the man who is responsible when something goes wrong, then you have never had anyone really responsible.
Rickover management objectives:
Require rising standards of adequacy.
Be technically self-sufficient.
Face facts.
Respect even small amounts of radiation.
Require adherence to the concept of total responsibility.
Develop the capacity to learn from experience.
Administration is, or ought to be, a necessary overhead to aid production, and should at all times be kept as low as possible.
They all have excellent resumes... So what I’m trying to find out is how they will behave under pressure. Will they lie, or bluff, or panic, or wilt? Or will they continue to function with some modicum of competence and integrity?
Discussing his style of interviewing all officers who entered the Naval Reactors program.
Everything new endangers something old. A new machine replaces human hands; a new source of power threatens old businesses; a new trade route wipes out the supremacy of old ports and brings prosperity to new ones. This is the price that must be paid for progress and it is worth it.
Any one detail, followed through to its source, will usually reveal the general state of readiness of the whole organization.
The Devil is in the details, but so is salvation.
The man in charge must concern himself with details. If he does not consider them important, neither will his subordinates. Yet “the devil is in the details.” It is hard and monotonous to pay attention to seemingly minor matters. In my work, I probably spend about ninety-nine percent of my time on what others may call petty details. Most managers would rather focus on lofty policy matters. But when the details are ignored, the project fails. No infusion of policy or lofty ideals can then correct the situation.
In Greek mythology, Antaeus was a giant who was strong as long as he had contact with the earth. When he was lifted from the earth he lost strength. So it is with engineers. They must not become isolated from the real world...
A man, by working 24 hours a day, could multiply himself 3 times. To multiply himself more than 3 times the only recourse is to train others to take over some of his work.
To do a job effectively, one must set priorities. Too many people let their "in" basket set the priorities. On any given day, unimportant but interesting trivia pass through an office; one must not permit these to monopolize his time. The human tendency is to while away time with unimportant matters that do not require mental effort or energy. Since they can be easily resolved, they give a false sense of accomplishment. The manager must exert self-discipline to ensure that his energy is focused where it is truly needed.
Sit down before fact with an open mind. Be prepared to give up every preconceived notion. Follow humbly wherever and to whatever abyss Nature leads, or you learnnothing. Don't push out figures when facts are going in the opposite direction.
More than ambition, more than ability, it is rules that limit contribution; rules are the lowest common denominator of human behavior. They are a substitute for rationalthought.
Administration is, or ought to be, a necessary overhead to aid production, and should at all times be kept as low as possible.
What it takes to do a job will not be learned from management courses. It is principally a matter of experience, the proper attitude, and common sense — none of which can be taught in a classroom... Human experience shows that people, not organizations or management systems, get things done.
To doubt one's own first principles is the mark of a civilized man. Don't defend past actions; what is right today may be wrong tomorrow. Don't be consistent; consistency is the refuge of fools.
Free discussion requires an atmosphere unembarrassed by any suggestion of authority or even respect. If a subordinate always agrees with his superior he is a useless part of the organization. In this connection there is a story of Admiral Sims when he was on duty in London in World War I. He called a conscientious hard-working officer in to him to explain why he was dissatisfied with the officer's work. The officer blushed and stammered when Sims pointed out that in all the time they had been working together the officer had never once disagreed with Sims.
Avoid over-coordination. We have all observed months-long delays caused by an effort to bring all activities into complete agreement with a proposed policy or procedure. While the coordinating machinery is slowly grinding away, the original purpose is often lost. The essence of the proposals is being worn down as the persons most concerned impatiently await the decision. The process has been aptly called coordinating to death.
A system under which it takes three men to check what one is doing is not control; it is systematic strangulation.
I believe it is the duty of each of us to act as if the fate of the world depended on him. Admittedly, one man by himself cannot do the job. However, one man can make a difference... We must live for the future of the human race, and not for our own comfort or success.
When doing a job — any job — one must feel that he owns it, and act as though he will remain in that job forever. He must look after his work just as conscientiously, as though it were his own business and his own money. If he feels he is only a temporary custodian, or that the job is just a stepping stone to a higher position, his actions will not take into account the long-term interests of the organization. His lack of commitment to the present job will be perceived by those who work for him, and they, likewise, will tend not to care. Too many spend their entire working lives looking for the next job. When one feels he owns his present job and acts that way, he need have no concern about his next job.
One must create the ability in his staff to generate clear, forceful arguments for opposing viewpoints as well as for their own. Open discussions and disagreements must be encouraged, so that all sides of an issue are fully explored.
Do not regard loyalty as a personal matter. A greater loyalty is one to the Navy or to the Country. When you know you are absolutely right, and when you are unable to do anything about it, complete military subordination to rules becomes a form of cowardice.
It is a human inclination to hope things will work out, despite evidence or doubt to the contrary. A successful manager must resist this temptation. This is particularly hard if one has invested much time and energy on a project and thus has come to feel possessive about it. Although it is not easy to admit what a person once thought correct now appears to be wrong, one must discipline himself to face the facts objectively and make the necessary changes — regardless of the consequences to himself. The man in charge must personally set the example in this respect. He must be able, in effect, to "kill his own child" if necessary and must require his subordinates to do likewise.
One must permit his people the freedom to seek added work and greater responsibility. In my organization, there are no formal job descriptions or organization charts. Responsibilities are defined in a general way, so that people are not circumscribed. All are permitted to do as they think best and to go to anyone and anywhere for help. Each person is then limited only by his own ability.
As subordinates develop, work should be constantly added so that no one can finish his job. This serves as a prod and a challenge. It brings out their capabilities and frees the manager to assume added responsibilities. As members of the organization become capable of assuming new and more difficult duties, they develop pride in doing the job well. This attitude soon permeates the entire organization.
Responsibility is a unique concept... You may share it with others, but your portion is not diminished. You may delegate it, but it is still with you... If responsibility is rightfully yours, no evasion, or ignorance or passing the blame can shift the burden to someone else. Unless you can point your finger at the man who is responsible when something goes wrong, then you have never had anyone really responsible.
Thoughts arising from practical experience may be a bridle or a spur.
Nothing so sharpens the thought process as writing down one's arguments. Weaknesses overlooked in oral discussion become painfully obvious on the written page.
The Quakers have an excellent approach to thinking through difficult problems, where a number of intelligent and responsible people must work together. They meet as equals, and anyone who has an idea speaks up. There are no parliamentary procedures and no coercion from the Chair. They continue the discussion until unanimity is reached. I want you guys to do that. Get in a room with no phones and leave orders that you are not to be disturbed. And sit there until you can deal with each other as individuals, not as spokesmen for either organization.
Rickover management objectives:
Require rising standards of adequacy.
Be technically self-sufficient.
Face facts.
Respect even small amounts of radiation.
Require adherence to the concept of total responsibility.
Everything new endangers something old. A new machine replaces human hands; a new source of power threatens old businesses; a new trade route wipes out the supremacy of old ports and brings prosperity to new ones. This is the price that must be paid for progress and it is worth it.
You know the answer to that, don’t you. You don’t need me to tell you.
Great minds discuss ideas, average minds discuss events, small minds discuss people.
Though Rickover quoted this, he did not claim to be the author of the statement. Using it in "The World of the Uneducated" in The Saturday Evening Post (28 November 1959), he prefaces it with "As the unknown sage puts it..." — It has sometimes been attributed to Eleanor Roosevelt, but without definite citation.
Some evidence for Henry Buckle (1821-1862) as the source: see p.33 quotation
You have to learn from the mistakes of others. You won't live long enough to make them all yourself.
Variations of this quote have been attributed to a number of people, including Eleanor Roosevelt, Samuel Levenson, and Lao Tzu; there is no solid support for any such attribution.
Why not the best?
This was the title of a book by Jimmy Carter sometimes misattributed as a quotation of Rickover; though the title was inspired by a job interview Carter had with Rickover, this phrasing was not used by Rickover himself:
I had applied for nuclear submarine program, and Admiral Rickover was interviewing me for the job... Finally he asked me a question and I thought I could redeem myself. He said, "How did you stand in your class at the Naval Academy?" ... I swelled my chest with pride and answered, "Sir, I stood 59th in a class of 820!" I sat back to wait for the congratulations — which never came. Instead the question: "Did you do your best?" I started to say, "Yes, sir," but I remembered who this was... I finally gulped and said, "No sir, I didn't always do my best." He looked at me for a long time, and then turned his chair around to end the interview. He asked one final question, which I have never been able to forget — or to answer. He said, "Why not?"
I don't mean to suggest... that he is a man who is without controversy. He speaks his mind. Sometimes he has rivals who disagree with him; sometimes they are right, and he is the first to admit that sometimes he might be wrong. But the greatness of the American military service, and particularly the greatness of the Navy, is symbolized in this ceremony today, because this man, who is controversial, this man, who comes up with unorthodox ideas, did not become submerged by the bureaucracy, because once genius is submerged by bureaucracy, a nation is doomed to mediocrity.