我们常常认为幸福是得到我们想要的，但它更多的是关于珍惜我们已有的。
We often think happiness is about getting what we want, but it's more about wanting what we have.
The most exciting moments in mathematics are when you realize that two seemingly unrelated areas are deeply connected.
Make women rational creatures, and free citizens, and they will quickly become good wives and mothers.
Chaos isn't a pit. Chaos is a ladder.