What is freedom of expression? Without the freedom to offend, it ceases to exist.

所有模型都是错误的，但有些是有用的。

The past is a foreign country; they do things differently there.

帮助别人，做善事，最令我愉悦；认真读书，重修养，最为人赞许。

The language of mathematics is universal, transcending cultural and linguistic barriers.

Entrepreneurship is not a sprint, but a marathon.

书籍是灵魂的镜子。