Juixe Techknow has posted a truly wonderful collection of programming quotes. Some of my personal favorites:

The software isn’t finished until the last user is dead.
Anonymous Support Group Member

The first 90 percent of the code accounts for the first 90 percent of the development time…The remaining 10 percent of the code accounts for the other 90 percent of the development time.
Tom Cargill

Why do we never have time to do it right, but always have time to do it over?
Anonymous Code Monkey

Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
Brian W. Kernighan