Our sweetest songs are those that tell of saddest thought.

历史不过是一连串的意外。它只能让我们准备好再次被意外。

使用程序证明四色定理不会改变数学-它只是表明该定理是一个世纪的挑战，对数学可能并不重要。

如果你感到不安，猜猜看？世界上的其他人也是如此。不要高估竞争对手而低估自己。你比你想象的更好。

All men have the stars, but they are not the same things for different people. For some, who are travelers, the stars are guides. For others they are no more than little lights in the sky. For others, who are scholars, they are problems. For my businessman they were wealth.

The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.

The truth is, we are all waiting to be told who we are.