我不是天使，我是恶魔。

To talk about painting is not only difficult but perhaps pointless too.

Sustainability is not a constraint; it's an opportunity to reinvent our industry.

My parents taught me to never give up.

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.

"The moment you doubt whether you can fly, you cease for ever to be able to do it."