Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful, but most people die tomorrow night, so don't give up today.

"We are all better when we're loved."

科学是一项集体事业，每个世纪都为其添砖加瓦。

一件事不一定是真的或假的；它可能既是真的又是假的。

人类的选择在于自由和幸福之间，而对于大多数人来说，幸福更好。

Of all the means which wisdom acquires to ensure happiness throughout the whole of life, by far the most important is friendship.

The United States should not try to spread democracy around the world.

理论物理学不仅仅是解方程，它关乎理解现实的本质。