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

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Originally published February 17, 2008. Copyright 2008 Carl Zimmer.

Leigh writes: When I was a PhD student in philosophy, I did a lot of work in philosophy of science. Not science proper, but after all, philosophy was (and is) the beginning of science. 😉 Anyway, my tattoo is a riff on the history of both science and philosophy– the hermetic symbols for the Philosopher’s Stone (sulfur + mercury + salt, and some sort of time designation). Yep, that’s right, alchemy.

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Originally published February 17, 2008. Copyright 2008 Carl Zimmer.