Stay true to yourself and never let success get to your head.

For the past 33 years， I have looked in the mirror every morning and asked myself: 'If today were the last day of my life， would I want to do what I am about to do today？' And whenever the answer has been 'No' for too many days in a row， I know I need to change something.

Integrity is the most important currency in business. Once you lose it, you lose everything.

A man can be happy with any woman as long as he does not love her.

I don't have any sense of myself except as an actor.

Mathematics is a collaborative endeavor. No one does it alone.