Every year of delay makes the problem harder to solve.

The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.

The most important thing is to keep the most important thing the most important thing.

要读得好，必须成为一个发明家。既有创造性的阅读，也有创造性的写作。

抽象不仅仅是隐藏细节；它是关于创建问题域的清晰简洁的模型。