" I will set aside whatever can be weakened even to the slightest degree, So that eventually all that remains is precisely nothing but what is certain and unshaken." - Descartes
"Accordingly, I have today suitably freed my mind of all cares, secured for myself a period of leisurely tranquility, and am withdrawing into solitude. At last I will apply myself earnestly and undeservedly to this general demolition of my opinions."