One cannot conceive anything so strange and so implausible that it has not already been said by one philosopher or another.
Authentication Score 2
Original Citation
Descartes, René [published anonymously]. Discours de la Méthode: Pour bien conduire sa raison, et chercher la vérité dans les sciences [Discourse on Method: To Conduct Reason Well, and Seek Truth in the Sciences]. Leiden, 1637, pt. 2.
Current Citation
Descartes, René. Discourse on the Method, translated by Ian Maclean. Oxford University Press, 2008, pt. 2.