A significant distinction of the early Plato and the later Plato has been offered by scholars such as E.R. Dodds and has been summarized by Harold Bloom in his book titled "Agon": "E.R. Dodds is the classical scholar whose writings most illuminated the Hellenic descent (in) "The Greeks and the Irrational" ... In his chapter on Plato and the Irrational Soul ... Dodds traces Plato's spiritual evolution from the pure rationalist of the "Protagoras" to the transcendental psychologist, influenced by the Pythagoreans and Orphics, of the later works culminating in the "Laws"."