Memory is the only paradise from which we cannot be driven.

If investing is entertaining, if you're having fun, you're probably not making any money. Good investing is boring.

数学的研究就像空气或重力——它无处不在，即使你看不到它。

Nature tends to produce constancy in all her works, but she does not always succeed.

The concept of nondeterminism in computation is one of the most important ideas in computer science.