Be brave, take risks, nothing can substitute experience.

The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.

80% of life's most defining moments take place by age 35.

The elegance of a proof is as important as its correctness.

I'm not interested in competing with anyone. I hope we all make it.