Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

构建软件系统最困难的部分是准确决定要构建什么。

You cannot always control what goes on outside. But you can always control what goes on inside.

And what I noted, since the really big ideas carry 95 percent of the freight, it wasn’t at all that hard for me to pick up all the big ideas and all the big disciplines and make them a standard part of my mental routines. Once you have the ideas, of course, they are no good if you don’t practice. You don’t practice, you lose it.