Fools are the ones who cannot change their minds.

小于给定数的素数个数是该数的一个函数。

We are part of a much larger community of living beings.

我们需要一个更主权、更团结、更民主的欧洲。

The old believe everything, the middle-aged suspect everything, the young know everything.

I like crossing the imaginary boundaries people set up between different fields—it's very refreshing.

You don’t have to be defined by the things you did or didn’t do in your past.