Adaptability is key in an ever-changing global market.

You'll never be able to please everybody, so you might as well be yourself.

But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthword, downword, into the dark, the deep - into evil.

"I am not afraid of death, I am afraid of life."

In mathematics, as in life, the most profound discoveries often come from asking the simplest questions.

计算复杂性的美在于它能够揭示问题的固有难度，而不管用于解决这些问题的具体算法是什么。