“A scientist may not be sure of the answer, but he's often sure he can find one. And that's a condition which is clearly not enjoyed by philosophy.”

“Future generations may or may not judge Wittgenstein to be one of the great philosophers. Even if they do not, however, he is sure always to count as one of the great personalities of philosophy. From our perspective it is easy to mistake one for the other; which he is time will tell.”

“He, I was sure, would have all the answers, and these answers he would find in my vagina.”

“I will not seek it," the other replied. "It has been opened once and it is enough. And you -- are you sure that man can conquer until he has been wholly defeated? Are you sure that he can find plenitude till he has known utter despair? You will not let him despair of himself, but it may be that only in such a complete despair he finds that which cannot despair and is something other than man.”

“Don't keep a man guessing too long - he's sure to find the answer somewhere else”

“Sure, he was lonely. Sure, they had a lot in common. Sure, he was attracted to her, and it was clear she felt the same about him.”