"Socrates was the chief saint of the Stoics throughout their history; his attitude at the time of his trial, his refusal to escape, his calmness in the face of death, and his contention that the perpetrator of injustice injures himself more than his victim, all fitted in perfectly with Stoic teaching. So did his indifference to heat and cold, his plainness in matters of food and dress, and his complete independence of all bodily comforts. But the Stoics never took over Plato's doctrine of ideas, and most of them rejected his arguments for immortality. Only the later Stoics followed him in regarding the soul as immaterial; the earlier Stoics agreed with Heraclitus in the view that the soul is composed of material fire."