The center of our galaxy is a fascinating place where extreme physics takes place, and it's a privilege to study it.

No one is useless in this world who lightens the burdens of another.

Life has to be given a meaning because of the obvious fact that it has none.

Never underestimate the power of a single breakthrough to change millions of lives.

The power of economics lies in its ability to reveal hidden truths about how the world works.

有些人不喜欢改变，但如果替代方案是灾难，你就需要接受改变。