“Not to be absolutely certain is, I think, one of the essential things in rationality.”
“The things one feels absolutely certain about are never true. That is the fatality of faith, and the lesson of romance.”
“At a certain point your brain stops to rationalize things. At a certain point it gives up, shuts off, shuts down.”
“What did it matter to me? Did I think that by making you rational about one thing, I could make you rational about everything? Maybe. Or maybe I just wanted to save you from your fears”
“I never made one of my discoveries through the process of rational thinking”
“I think when one's working, one works between absolute confidence and absolute doubt, and I got a huge dallop of each.”