A language that doesn't affect the way you think about programming is not worth knowing.
We are on the verge: Today our program proved Fermat's next-to-last theorem.
Optimization hinders evolution. Everything should be built top-down, except the first time. Simplicity does not precede complexity, but follows it.
There is no such thing as a free variable.
Don't have good ideas if you aren't willing to be responsible for them.
There are two ways to write error-free programs; only the third one works.