"I watch the Eruptions. Mount Dad, long dormant, now considered armed and dangerous. Mount Saint Mom, oozing lava, spitting flame. Warn the villagers to run into the sea."

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Richard Feynman was fond of giving the following advice on how to be a genius. You have to keep a dozen of your favorite problems constantly present in your mind, although by and large they will lay in a dormant state. Every time you hear or read a new trick or a new result, test it against each of your twelve problems to see whether it helps. Every once in a while there will be a hit, and people will say, "How did he do it? He must be a genius!"

— Gian-Carlo Rota