We are all the heroes of our own stories.

科学不过是常识的极致——观察上严格精确，逻辑上对谬误毫不留情。

Human beings, viewed as behaving systems, are quite simple. The apparent complexity of our behavior over time is largely a reflection of the complexity of the environment in which we find ourselves.

阅读未见过的书，如结识好朋友，情意和洽；重读已看过的书，如老朋友相晤，叙旧联谊。