Pessimism leads to weakness, optimism to power.

卧室里的哲学家与夜总会里的哲学家一样荒谬滑稽。

"We are all time travelers, moving through the past, present, and future in our minds."

一个人不论年龄多大，都要学习自己不懂的东西。这不是羞耻。

The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.

A law of nature， lex naturalis， is a precept or general rule found out by reason， by which a man is forbidden to do that which is destructive of his life or takes away the means of preserving the same.

    ——杜先生晚年在香港，先生为中国抗战.赈灾慈善做出巨大贡献，晚年依旧气度过人，毁掉所有欠条。