오대형님과 헤딩님 의견에 대해서는 시간이 되는대로 의견을 말씀 드리겠습니다. 헤딩님이 말씀하신 Cogito, ergo sum에 대해서는 다음의 위키 설명을 참조하시기 바랍니다. 원문은 라틴어로 적힌 것이 맞습니다. Cogito ergo sum From Wikipedia, Rene Descartes (15961650)"Cogito, ergo sum" (Latin: "I think, therefore I am") or Dubito, ergo cogito, ergo sum (Latin: "I doubt, therefore I think, therefore I am") is a philosophical statement used by Rene Descartes, which became a foundational element of Western philosophy. Descartes's original statement was in fact "Cogito ergo sum", as Descartes wrote in Latin because it was the language of science in Europe. It is, however, often translated into his native French as "Je pense donc je suis.". The phrase occurs in his Discourse on Method (1637). (See Principles of Philosophy, Part 1, article 7: "Ac proinde hæc cognitio, ego cogito, ergo sum, est omnium prima & certissima, quæ cuilibet ordine philosophanti occurrat.")