A well-designed system should be easy to use, easy to understand, and easy to modify.
心灵不是一种物质,而是一个过程。
没有伟大的意志力,便没有雄才大略。
The major credit I think Jim and I deserve... is for selecting the right problem and sticking to it.
我认为我和吉姆值得称赞的主要原因是...选择了正确的问题并坚持研究它。