Some programming languages manage to absorb change, but withstand progress.
There is no such thing as a free variable.
A LISP programmer knows the value of everything, but the cost of nothing.
Because of its vitality, the computing field is always in desperate need of new cliches: Banality soothes our nerves.
You think you KNOW when you learn, are more sure when you can write, even more when you can teach, but certain when you can program.
Don't have good ideas if you aren't willing to be responsible for them.