Endre Szemeredi quotes:

I am a professor at the computer science department, but I don't know how to use a computer, not even for Email.

You must all know about Bourgain, so I don't have to write his name on the board-for an obvious reason.

Too much knowledge could be a bad thing. I was lead to the Szemerédi theorem by proving a result, about squares, that Euler had already proven, and I relied on an "obvious" fact, about arithmetical progressions, that was unproved at the time. But that lead me to try and prove that formerly unproved statement- about arithmetical progressions-and that ultimately lead to the Szemerédi Theorem.