核心技术是买不来的，必须靠自己研发。

True progress happens when we stop defending the status quo and start challenging it.

The body achieves what the mind believes.

Nowadays, particularly in the United States, if you meet someone at the bottom of society, they may unkindly be described as a "loser." There's a real difference between an unfortunate and a loser, and that shows 400 years of evolution in society and our belief in who is responsible for our lives. It's no longer the gods, it's us. We're in the driving seat.

数学的力量在于它的普遍性和抽象性。