Sometimes, it's not that the other person doesn't care about you, but that you care too much about them.

If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."

数据告诉你发生了什么，但只有直觉能告诉你为什么。

我相信第二次机会，因为我得到了一个。

如果一个人不过高地估计自己，他就会比他自己所估计的要高得多。

数学不是关于数字、方程、计算或算法的：它是关于理解的。