The clever programmer

"Consider two programs. One was written by a clever programmer

using all the tricks. The program contains no comments, but it works.

The other program is well commented and nicely structured, but it

doesn't work. Which program is more useful? In the long run, the

broken one. It can be fixed. Although the clever program works now,

sooner or later all programs have to be modified. The worst thing that

you will ever have to do is to modify a cleverly written program."

-- "Practical C Programming"