I just wanted to point out a couple of the aspects of this "Nietzsche rocks" t-shirt that come to mind right away. Why not "Plato rocks" "Cusa rocks," or "Leibniz rocks?" What is so special about this rabid dog's "philosophy," some of which is patently ludicrous? Note that "Nietzsche" converts to 109, and "rocks" to 66. Together, they're 10966, and if the 9 is rotated, 10666. Adding the digits yields 22, twice the number of Satanism disguised as black magic. Adding 109 and 66 yields 175, and adding its digits yields 13, which some people regard as the number of Satan. (It's not - it's the number of Lucifer, who is someone else entirely, although he works closely with Satan and the Devil.) The "color," black, denotes evil. So, although there's no way to prove the intent behind this t-shirt, I'm going to go out on a limb and assume that it, like Harry Potter fantasies about "white" wizardry, is intended to attract gullible youngsters to the dark side.