Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph.

There is no friend as loyal as a book.

译文：专门注重修养内心的人每天都会看到自己的不足，专门注重增长见识的人每天都会看到自己的长处。每天看到自己不足的人会逐渐变得有长处，每天看到自己有长处的人会逐渐变得有不足。

没有行动的数据只是水产养殖革命中的噪音。