The most important single aspect of software development is to be clear about what you are trying to build.

A theory that lacks beauty is unlikely to be correct.

《中国革命史》

到达另一边的唯一方法就是穿过那扇门。

物质的唯一法则是由我们的心灵所构建的，而心灵的唯一法则是由物质为它构建的。