These walls are very interesting. When you first went to jail, you hated the high walls, and slowly, you get used to it. This is called institutionalization.

股市中充满了知道一切价格但不知道价值的人。

There are a lot of things that go into creating success. I don't like to do just the things I like to do. I like to do things that cause the company to succeed.

——《在广州商团及警察联欢会的演说》（1924年1月14日）

数学中发现的快乐是无与伦比的。