If the software doesn't have to work, you can always meet any other requirement. - Gerald Weinberg

If builders built houses the way programmers built programs, the first woodpecker to come along would destroy civilization.

A controller that cannot control itself is worse than no controller at all: If you cannot manage yourself, you have no business managing others.

When program developers are not territorial about their code and encourage others to look for bugs and potential improvements, progress speeds up dramatically.