In programming, as in everything else, to be in error is to be reborn.
It goes against the grain of modern education to teach children to program. What fun is there in making plans, acquiring discipline in organizing thoughts, devoting attention to detail and learning to be self-critical?
There are two ways to write error-free programs; only the third one works.
We are on the verge: Today our program proved Fermat's next-to-last theorem.
One can't proceed from the informal to the formal by formal means.
If a listener nods his head when you're explaining your program, wake him up.