Why does Socrates spend so much effort defining and describing the soul in so much detail in the Phaedrus? He tells us outright, in the dialogue. It is because no man can gain true knowledge from a speech, if the orator does not himself know how his speech is going to guide the soul to its first memory of the unified reality of beauty, found in the divine realm. Dialectic is the way to wisdom, and dialectic can only be achieved through speech.
I am hesitant to do back-to-back critiques of Stefan Molyneux, because I don’t want the blog to become the “Contra Molyneux” journal. However, in his Christmas podcast, Stefan made a number of titillating and curious assertions, that I just couldn’t resist. He did not offer a thorough defense of any of them in the podcast, but we can excuse this on the ground that at least some of these are defended elsewhere, and were only presuppositions necessary for the present discussion.