过去是一个不会停止纠缠你的幽灵。

我不需要理由去感恩。

The scientific community must work together to address global challenges.

The power within you is infinite, if you only realize it.

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.

政治制度的力量在于其适应不断变化的环境并吸收新思想和实践的能力。

The dead are not dead to us until we have forgotten them.

I don’t live for the approval of others. I live for myself.