写作是使不可见之物可见的艺术。
Writing is the art of making the invisible visible.
There is no such joy in the tavern as upon the road thereto.
The only way to do great work is to love what you do.
一个公司的好坏取决于为它工作的人。
The more you know, the more you realize you don't know.
关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。
译文：学习贵在实践，而非空知;贵在有用于世，而非无用之学。反对空谈，提倡经世致用。