We were both young when I first saw youI close my eyes and the flashback starts?I'm standing there on a balcony in summer air?See the lights， see the party， the ball gowns?

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

Every challenge is an opportunity to grow stronger and wiser.

The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.

我们都是自以为是的伪君子。

True progress is measured not just in profits, but in positive impact.