Descartes, R. (1641) Meditations on First Philosophy, in The Philosophical Writings of René Descartes, trans. by J. Cottingham, R. Stoothoff and D. Murdoch, Cambridge: Cambridge University Press, 1984, vol. 2, pp. 1-62.
Dictionary.com網絡詞典： "mind": "1. (in a human or other conscious being) the element, part, substance, or process that reasons, thinks, feels, wills, perceives, judges, etc.: the processes of the human mind. 2. Psychology. the totality of conscious and unconscious mental processes and activities. 3. intellect or understanding, as distinguished from the faculties of feeling and willing; intelligence."
Google給出的定義： "mind": "The element of a person that enables them to be aware of the world and their experiences, to think, and to feel; the faculty of consciousness.." [1] （頁面存檔備份，存於網際網路檔案館）
Redding, Paul, "Georg Wilhelm Friedrich Hegel", The Stanford Encyclopedia of Philosophy (Summer 2012 Edition), Edward N. Zalta (ed.), forthcoming. [2] （頁面存檔備份，存於網際網路檔案館）. See section "2.1 Background: 「Idealism」 as understood in the German tradition".[expand reference]
Oxford American College Dictionary, "mind": "1. the element of a person that enables them to be aware of the world and their experiences, to think, and to feel; the faculty of consciousness and thought."
Druckman, D. and Swets, J. A. eds. Enhancing Human Performance: Issues, Theories and Techniques. National Academy Press, Washington, D.C. 1988: 22. ISBN 0-309-07465-7.
Reuters. Telepathy gets academic in Sweden. CNN. 2003-09-05 [2009-03-09]. （原始內容存檔於2009-06-28）. Despite decades of experimental research ... there is still no proof that gifts such as telepathy and the ability to see the future exist, mainstream scientists say.
Cordón, Luis A. Popular psychology: an encyclopedia. Westport, Conn: Greenwood Press. 2005: 182. ISBN 0-313-32457-3. The essential problem is that a large portion of the scientific community, including most research psychologists, regards parapsychology as a pseudoscience, due largely to its failure to move beyond null results in the way science usually does. Ordinarily, when experimental evidence fails repeatedly to support a hypothesis, that hypothesis is abandoned. Within parapsychology, however, more than a century of experimentation has failed even to conclusively demonstrate the mere existence of paranormal phenomenon, yet parapsychologists continue to pursue that elusive goal.
