一句话

 A socket is a communication channel between two processes, usually (but not necessarily) running on different computers.

The ideal library is small, fast, powerful, flexible, extensible, intuitive, universally available, well supported, free of use restrictions, and bug-free. It is also nonexistent.

Representation is the essence of programming.

The programmer delivers satisfaction of a user need rather than any tangible product. And both the actual need and the user's perception of that need will change as programs are built, tested, and used. <the mythical man-month:11>

Program maintenance is an entropy-increasing process, and even its most skillful execution only delays the subsidence of the system into unfixable obsolescene. <the mythical man-month:11>