"You got a resident corner here... Shut-down corner. Now it's gotta be one or the other. If you ain't gotta tackle, you'd better cover. If you ain't gotta cover, you'd better tackle. THEY AIN'T DOIN' NOTHING"

"If, I say now, when, as I conceive and imagine, God orders me to fulfill the philosopher's mission of searching into myself and other men, I were to desert my post through fear of death, or any other …"

"Definitions, like questions and metaphors, are instruments for thinking. Their authority rests entirely on their usefulness, not their correctness. We use definitions in order to delineate problems we…"

"Archimedes said, "Give me a fulcrum and I will move the Earth"; but there isn't one. It is like betting on the future of the human race — I might wish to lay a bet that the human race would destroy it…"

"In other words, the fact that the criterion we happen to use has a fine ancestry of highbrow statistical theorems does not justify its use. Such justification must come from empirical evidence that it…"