The universe is a pretty big place. If it's just us, seems like an awful waste of space.

If you can keep your head when all about you are losing theirs and blaming it on you...

The highest form of ignorance is when you reject something you don't know anything about.

A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.

成功不仅仅是赚钱，而是有所作为。

站在风口上，猪都能飞起来。