A nation without memory is a nation without a future.

The beauty of algorithms lies not in their complexity, but in their simplicity and elegance.

Giving up smoking is the easiest thing in the world. I know because I’ve done it thousands of times.

Every book is a kind of journey, and every journey changes you.

The universe is not only queerer than we suppose, but queerer than we can suppose.

在家不会接待客人，出去后才知道这个问题的重要性。

Be yourself; everyone else is already taken.

"Every word is a choice, and every choice carries a consequence."

You don’t have to be perfect to inspire others. Let people get inspired by how you deal with your imperfections.

创新是解决世界最紧迫问题的关键。