(Sung to the Beach Boys' In My Room)
Descartes sat and meditated, and thus cogitoed--ergo sum, ergo sum.
Doubting all he took as granted forced him to conclude--ergo sum, ergo sum.
It took four more meditations for the world to bloom--
proving God deposed deception (with distinctness too!).
The path of all modern thinking starts with Descartes' turn--ergo sum, ergo sum. . .