The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

知识最大的敌人不是无知，而是知识的幻觉。

"Time is the school in which we learn, time is the fire in which we burn."

The voice is an instrument that is inside you. It’s the only instrument that you can’t see.

The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.

科学是人类认识世界、改造世界的强大武器。