"Purpose gives meaning to mental activity."

The only limit to our realization of tomorrow is our doubts of today.

数学中的每个问题都是一个等待解决的谜题，而乐趣就在于解决的过程。

A writer must be willing to be alone.

时间是一条将我们带走的河流，但它也留下了我们存在的痕迹，就像沙滩上的脚印。

CHASTITY. Rarely use venery but for health or offspring, never to dulness, weakness, or the injury of your own or another’s peace or reputation.

I don't think that when people grow up, they will become more broad-minded and can accept everything.Conversely, I think it's a selecting process, knowing what's the most important and what's the least. And then be a simple man.