"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
对付一个不自由的世界唯一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。
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
数学是为数学家而写的。
