Good programmers know what to write. Great ones know what to rewrite (and reuse)

Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.

When writing gateway software of any kind, take pains to disturb the data stream as little as possible - and never throw away information unless the recipient forces you to!

With enough eyes, all bugs are shallow.

Programmer time is expensive; conserve it in preference to machine time

Computer science education cannot make anybody an expert programmer any more than studying brushes and pigment can make somebody an expert painter.

Grovelling is not a substitute for doing your homework.