对称性是降低复杂性的概念（协同例程包括子例程）；到处寻找它。

The measure of a good book is determined by how much it makes you think and feel.

Now, I am not going to stand here and tell you that failure is fun. That period of my life was a dark one, and I had no idea that there was going to be what the press has since represented as a kind of fairy tale resolution. I had no idea then how far the tunnel extended, and for a long time, any light at the end of it was a hope rather than a reality.