幸福不是现成品，它来自你自己的行动。

I'm very proud to be black, but black is not all I am. That's my cultural historical background, my genetic makeup, but it's not all of who I am nor is it the basis from which I answer every question.

没有压力，就没有钻石。

文化唯物主义基于一个简单的前提，即人类社会生活是对地球生存实际问题的回应。

The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.

暴力的减少可能是我们物种历史上最重要却最不被重视的发展。

目标不是用来梦想的，而是用来实现的。

"To be Irish is to know that in the end the world will break your heart."

I prefer to supervise the whole operations of the government myself rather than entrust the public business to subordinates.