Euler's Identity

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Tristan writes, “As the movie ‘Pi’ has now so clichely put it, “Numbers are the language of nature.” As a physicist, I always felt this was one of the most beautiful sentences in that language — a medley of the five most important numbers. Through an odd turn of events, this is actually my own handwriting from a bar napkin.” www.rpgroup.caltech.edu/~natsirt/tatoo.jpg