人们算计太多，思考太少。

The past is a ghost, the future a dream, and all we ever have is now.

数学不仅仅是一系列抽象概念的集合，而是一种让我们理解宇宙的语言。

真正的革命者是被伟大的爱所引导的。

A vida é a arte do encontro, embora haja tanto desencontro pela vida.

The question I ask myself like almost every day is, 'Am I doing the most important thing I could be doing?'

成为一体，团结一致是伟大的。但尊重差异的权利可能更伟大。

Success is not about the money you make, it’s about the difference you make in people’s lives.