According to some accounts, Pythagoras (c. 570–495 B.C.E.), the Pre-Socratic who founded a “brotherhood” based on the religious idea that everything is made up of numbers, was taught his ethical beliefs by Themistocles (c. 524–459 B.C.E.), the Priestess of Delphi. It is known that Apollo was both the god at the Temple of Delphi and a deity worshipped by Pythagoreans. Pythagoras and his followers practiced self-examination and dietary and ritualistic purification (including their vegetarianism), based on a belief in the sameness of all life. This principle of sameness might have implied that women should be included in philosophical activities.