Friends come and go but enemies accumulate.

If you improve or tinker with something long enough, eventually it will break or malfunction.

Investment in reliability will increase until it exceeds the probable cause of errors, or until someone insists on getting some useful work done.

Don't force it... get a bigger hammer.

The universe is simmering down, like a giant stew left to cook for four billion years. Sooner or later we won’t be able to tell the carrots from the onions.

When working on a project, if you put away a tool that you're certain you're finished with, you will need it instantly.

The compromise will always be more expensive than either of the suggestions it is compromising.