Knowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.

[I]t is clear the future holds great opportunities. It also holds pitfalls. The trick will be to avoid the pitfalls, seize the opportunities, and get back home by six o’clock.

The things taught in schools and colleges are not an education, but the means of education.

A professor is someone who talks in someone else's sleep.

Hitch your wagon to a star.