A. Cosmological proof of the Existence of God In the 3rd Meditation, Descartes attempts to prove that God (i) exists, (ii) is the cause of the essence of the meditator (i.e. the author of his nature as a thinking thing), and (iii) the cause of the meditator's existence (both as creator and conserver, i.e. the cause that keeps him in existence from one moment to the next). The proof that God exi...
