民主是最坏的政府形式——除了其他所有不断地被试验过的政府形式之外。

Your brain is more powerful than you think; the key is learning how to activate it.

I don't compete with others. I compete with myself.

相关性和因果关系之间的区别不仅仅是学术上的——它可能具有深远的政策影响。

The total amount of suffering per year in the natural world is beyond all decent contemplation. During the minute that it takes me to compose this sentence, thousands of animals are being eaten alive, many others are running for their lives, whimpering with fear, others are slowly being devoured from within by rasping parasites, thousands of all kinds are dying of starvation, thirst, and disease.