A conscience is what hurts when all your other parts feel so good. If at first you don't succeed, then skydiving definitely isn't for you. Beat the 5 o'clock rush, leave work at noon. If you jogged backward . . I couldn't repair your brakes, so I made your horn louder.
Artificial intelligence is no match for natural stupidity.
If at first you don't succeed, destroy all evidence that you tried. A clean desk is a sign of a cluttered desk drawer. Everyone has a photographic memory, some just don't have film. There's no future in time travel. Radioactive cats have 18 half-lives.