A central concept of the Pythagoreans was arithmos, number. They were responsible for the discovery of numbers as a conceptual paradigm; they were gripped by the numinosity of numbers and experienced them as divine.
Edinger identifies the Pythagorean encounter with number as the historical origin of number symbolism's psychological depth, framing numerical numinosity as an archaic and recoverable experience.
, The Psyche in Antiquity, Book One: Early Greek Philosophy From Thales to Plotinus, 1999thesis