Education is an admirable thing. But it is well to remember from time to time that nothing that is worth knowing can be taught.

我相信第二次机会，因为我得到了一个。

Writing is a way of making sense of the world.

种树的最佳时间是25年前，第二好的时间是今天。

The joy of mathematics lies in the journey of discovery, not just the destination.