I'd recommend looking at "the quadrivium" by little wooden books. It is one of the most beautiful books ever made. Since Pythagoras never wrote and was an empi

I'd recommend looking at "the quadrivium" by little wooden books. It is one of the most beautiful books ever made. Since Pythagoras never wrote and was an empiricist, Pythagoreanism needs continual interpretation. But the core ideas, of Oneness, of "all is number" and that of fundamental harmonies in the Cosmos and psyche/soul — those are are perennial ideas of great value.