There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.

Every company will become a technology company in the digital era.

作家就是那种花上数年耐心地试图发现自己内心第二个存在的人，以及那个造就了他的世界。

数学之美在于它能够揭示看似复杂事物背后的简单性。