写作是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。

Don’t tell me how good you make it; tell me how good it makes me when I use it.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

市场并不完美，但设计良好的市场接近完美。