"Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by examining his wives' mouths."

"I consider myself a rationalist, which is a very different thing from being a rationalist."

"If a man is in doubt about his own salvation, the best thing for him to do is to stop thinking about it."

"One eminently orthodox Catholic divine laid it down that a confessor may fondle a nun's breasts, provided he does it without evil intent. But I doubt whether modern authorities would agree with him on…"

"The greatest challenge to any thinker is stating the problem in a way that will allow a solution."