Understanding the limits of computation is as important as understanding its possibilities.
When I got to 40 or so... I had the sense when I looked back over my life I would actually see a mess of decisions, a few of which I had thought about, some of which I had sort of stumbled on, and many that I had no control over whatsoever.
Insanity is repeating the same mistakes and expecting different results.
过去从未死去,它甚至还没有过去。