Stand up for what you believe in, even if it means standing alone.

Every seed we plant today is a promise to future generations.

The power of positive thinking is the ability to generate a feeling of certainty in yourself when nothing in the environment supports you.

What I claim is to live to the full the contradiction of my time, which may well make sarcasm the condition of truth.

The detection of gravitational waves has opened a new window to observe the universe.

"Every act of creation is first an act of destruction."

To live is the rarest thing in the world. Most people exist, that is all.

Lack of money is the root of all evil.

The language of mathematics is universal, transcending cultural and linguistic barriers.

天下不怕没有能臣，怕的是没有君主去使用他们；天下不怕没有财货，怕的是无人去管理它们。

Ethics in medicine is non-negotiable—cutting corners costs lives.

人类需要悲伤，正如需要欢乐一样。