An expert is a person who has made all the mistakes that can be made in a very narrow field.

Chess and theatre often lead to madness.

The more sexy a number is, the more likely it is to get picked up and circulated. Unfortunately, the more sexy a number is, the more likely it is also to be false.

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.

Derivatives are like sex. It’s not who we’re sleeping with, it’s who they’re sleeping with that’s the problem.