对付一个不自由的世界的方法就是变得如此绝对自由,以至于你的存在本身就是一种反叛。
常识就是人到十八岁为止所累积的各种偏见。
Emancipate yourselves from mental slavery, none but ourselves can free our minds.
The unity of mathematics is not imposed but discovered.
The best designs come from understanding the needs of the people who will use them.