Moses & Taps work illegally and, as strange as it sounds at first, are part of a tradition that goes back to Immanuel Kant.

Enlightenment was, he had written, the "exit of man from his self-inflicted immaturity".

Kant understands as of age only those who can use their understanding without the guidance of another.

Anyone who does not have the courage to do so is guilty. "Kant is pretty much the only thing I could take with me from school," says Moses. Today he risks more than a few hours detention for his art. High fines and prison sentences or even his life.