I think, therefore I amexprexpression: Prepositional phrase, adverbial phrase, or other phrase or expression--for example, "behind the times," "on your own."
(Cartesian philosophy) (笛卡尔的哲学思想)
我思故我在 wǒ sī gù wǒ zài
备注: Quotation of Descartes, translated from Latin.