可怜的是那些快乐取决于他人许可的人。

A thing is not necessarily either true or false; it can be both true and false.

同理心是打开理解和与他人建立联系之门的钥匙。

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.

It’s not about money. It’s about the people you have, how you’re led, and how much you get it.

数学语言是普遍的，超越了文化和语言的障碍。