Leadership means making tough decisions today that will benefit future generations.

"We are all in the gutter, but some of us are looking at the stars."

In mathematics, the art of proposing a question must be held of higher value than solving it.

有时候你得有点调皮。

"Time is a thief, but it's also a giver. You just have to be willing to see the gifts."

伦理学的任务不仅是理解世界，而且是改变世界。