I don’t think you can compare eras in tennis. Every era has its great players.
I don't want to make things that are difficult for people. I want to make things that are easy.
要理解知觉,研究其在适应中的作用。
质数就是当你把所有模式都去掉后剩下的东西。我认为质数就像生活。它们非常合乎逻辑,但你永远无法弄清楚规则,即使你花所有时间思考它们。
道之外没有其他事物,事物之外也没有道。
辅时:适应时势行事。违时:违背时势行事。当时:适时。圣人行事能够适应时势,不能违背时势。聪明人善于谋划,不如利用合适的时机。