Interestingly, Freud's model is very similar to Plato's tripartite soul from the Republic with the appetites, the "spirited" part of the soul, and Nous, and Ari

Interestingly, Freud's model is very similar to Plato's tripartite soul from the Republic with the appetites, the "spirited" part of the soul, and Nous, and Aristotelian psychology has the same tripartite soul. The big difference is the modern view of superego vs the ancient view of nous are quite distinct.