I mean it as a compliment when I say that you could almost define a philosopher as someone who won't take common sense for an answer. - Richard Dawkins

Gravity is not a version of the truth. It is the truth. Anybody who doubts it is invited to jump out of a tenth-floor window.

Today the theory of evolution is about as much open to doubt as the theory that the earth goes round the sun, but the full implications of Darwin’s revolution have yet to be widely realized.

If you need a geography lesson in order to know where Africa is – if, by age seventeen, you have somehow failed to imbibe such knowledge by osmosis or simple curiosity – you surely don’t have the sort of mind that would benefit from a university education.