6 ideas
The soul is a charioteer (reason) driving two winged horses: a noble one that responds to command and a sense of shame, and an unruly one that lunges toward immediate appetite. Good conduct is not the absence of desire. It is the charioteer's disciplined management of the conflict between the horses, often by forcefully reining in the unruly one until it learns restraint.
In the myth of Theuth and Thamus, the king argues that writing is a remedy for reminding, not for memory. People who rely on external marks will stop exercising internal recall. They will also gain the appearance of wisdom without its substance, having read much without being taught.
A written text is like a painting: it looks alive, but when questioned it says the same thing forever. It cannot defend itself, cannot tell which readers to address, and drifts to people who misunderstand it. Real knowledge lives in dialogue that can respond, adapt and defend itself, 'written in the soul' of the learner.
Not all madness is bad. Some of the greatest goods come through god-sent madness, of which Socrates names four kinds: prophecy, ritual purification, poetic inspiration from the Muses, and erotic love. Eros is the highest because it moves the soul beyond calculating self-interest toward beauty and truth. Sober, calculated prudence is therefore not automatically superior to inspired passion.
Real rhetoric is not a bag of stylistic tricks. It rests on two things. The first is knowing the truth of the subject through definition and division into natural kinds. The second is classifying types of souls and matching the kind of speech to the kind of listener. A speaker who knows only persuasive techniques without these is like someone who knows drugs but not when or to whom to give them.
Before birth, the soul glimpsed the true Forms beyond the heavens and then forgot them on falling into a body. Learning is recollection triggered by earthly likenesses. This is why a beautiful face can overwhelm a lover: it reawakens a memory of Beauty itself, making the soul's lost 'wings' begin to regrow.