As to Pythagoras himself, the mathematician and philosopher was killed in the backlash against his cult. A number of different accounts depict his end. One of them has it that, as he fled for his life with angry pursuers hot on his heels, Pythagoras flight took him to a field of beans. Beans were sacred to Pythagoras, so he stated that he would rather die than step on a single bean. That is what happened when his pursuers caught up with him at the edge of the bean field, and slit his throat.
In another version, the people of Croton attacked a house in which Pythagoras and his followers were conducting a meeting, and set it on fire. Pythagoras escaped with a small group of followers, and eventually took shelter in a temple. There, he was besieged, and eventually starved to death. He had refused to eat the only food available: beans. Contra his claims, Pythagoras was not a god, and contra his and his followers’ prediction, he did not return from the dead.
Where Did We Find This Stuff? Some Sources and Further Reading