The essence of mathematics lies in its freedom.

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

Great design should solve problems, not create them.

"The only thing to do with good advice is to pass it on. It is never of any use to oneself."

The world is my country, all mankind are my brethren, and to do good is my religion.

我不会假装在冠状病毒到来之前一切都很完美。

技术应该为农民服务，而不是让他们的工作复杂化。