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常識。
常理（英語：Common sense 或 Essential sense），[1]是指一般人所應具備的理解能力和判斷能力，並且能對日常事務進行合理和實際的判斷。[2][3][4] [5]亞里士多德認為，常理意味著人類懂得如何區分不同的事物。[6]
"common sense （頁面存檔備份，存於網際網路檔案館）." Merriam-Webster Online Dictionary: "sound and prudent judgment based on a simple perception of the situation or facts."
"common sense （頁面存檔備份，存於網際網路檔案館）." Cambridge Dictionary: "the basic level of practical knowledge and judgment that we all need to help us live in a reasonable and safe way."
van Holthoorn & Olson (1987，第9頁) harvtxt模板錯誤: 無指向目標: CITEREFvan_HolthoornOlson1987 (幫助): "common sense consists of knowledge, judgement, and taste which is more or less universal and which is held more or less without reflection or argument."
C.S. Lewis (1967，第146頁) harvtxt模板錯誤: 無指向目標: CITEREFLewis1967 (幫助) wrote that what common sense "often means" is "the elementary mental outfit of the normal man."
出處：孫中山 《建國方略》三：「凡欲固結吾國之人心，糾合吾國之民力者，不可不熟習此書。而遍傳之於國人，使成為一普通之常識。」
夏丏尊 葉聖陶 《文心》五：「詩之外還有詞，詞原可以不讀，如果為求常識起見，想讀，也好，就讀《白香詞譜》吧。」
The Shorter Oxford English Dictionary of 1973 gives four meanings of "common sense": An archaic meaning is "An internal sense which was regarded as the common bond or centre of the five senses"; "Ordinary, normal, or average understanding" without which a man would be "foolish or insane", "the general sense of mankind, or of a community" (two sub-meanings of this are good sound practical sense and general sagacity); A philosophical meaning, the "faculty of primary truths."
