I used to be surprised and even depressed when I met someone I had admired and discovered him or her to be a jerk or, perhaps worse, rather common. Now I half expect this reaction and even find it a little reassuring, maybe even uplifting. Isn't it amazing that somebody like that could produce such and such.

Data, data everywhere, but not a thought to think.

Uncertainty is the only certainty there is, and knowing how to live with insecurity is the only security

So many see themselves as aggrieved; so few see themselves as aggrievers.

The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

Mathematics is no more computation than typing is literature.

When asked why he doesn't believe in astrology, the logician Raymond Smullyan responds that he's a Gemini and Geminis never believe in astrology.