In looking for someone to hire, you look for three qualities: integrity, intelligence, and energy. But the most important is integrity because if they don't have that, the other two qualities, intelligence and energy, are going to kill you.

To teach mathematics is to inspire the next generation of thinkers and problem solvers.

最糟糕的不平等是试图使不平等的事物平等。

The only way to avoid being miserable is not to have enough leisure to wonder whether you are happy or not.