书是一面镜子：如果一只猿猴往里看，使徒不太可能往外看。

我们必须建立一个既能保护公民又不与世界隔绝的欧洲。

在数学中，发现的旅程和目的地一样重要。

You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.

你不必伟大才能开始，但你必须开始才能伟大。

未来属于那些敢于重新思考现状并大胆行动的人。