Steff is een typische vrouw.

Life is what happens to you while you’re busy making other plans.

Proof is the idol before whom the pure mathematician tortures himself.

The source of the greatest errors is to be found in those moves that are made merely according to rule and not based on the individual plan or thought of the player.

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