Television is something the Russians invented to destroy American education.

When I was a child, the Earth was said to be two billion years old. Now scientists say it's four and a half billion. So that makes me two and a half billion.

Here I am: My brain is open.

It will be another million years, at least, before we understand the primes.

Every human activity, good or bad, except mathematics, must come to an end.

I'll tell you once, and I'll tell you again. There's always a prime between n and 2n.

Property is a nuisance.