I think that it's extraordinarily important that we in computer science keep fun in computing. When it started out, it was an awful lot of fun. Of course, the paying customers got shafted every now and then, and after a while we began to take their complaints seriously. We began to feel as if we really were responsible for the successful, error-free perfect use of these machines. I don't think we are. I think we're responsible for stretching them, setting them off in new directions, and keeping fun in the house. I hope the field of computer science never loses its sense of fun.

Once you understand how to write a program get someone else to write it.

It is better to have 100 functions operate on one data structure than to have 10 functions operate on 10 data structures.

One man's constant is another man's variable.

In programming, as in everything else, to be in error is to be reborn.

Adapting old programs to fit new machines usually means adapting new machines to behave like old ones.

One can't proceed from the informal to the formal by formal means.