If you can't explain your chemistry to a non-scientist, you don't understand it well enough.

伟大的领导者倾听多于发言，行动多于计划。

I'm stronger than yesterday.

写作是留下遗产的一种方式。

我不认为自己是一个碰巧是黑人的作家。我认为自己是一个黑人作家。

I want to make a difference in the world.

"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."