The forms in intellect are some kind of blueprint or model on which the physical world is based, and something needs to come along and shape the matter in accordance with that blueprint. What does that is soul.

The body is some kind of image of you, it's kind of something that's just attached to your soul, some kind of outside principle, which doesn't really represent who you really are.

The idea is that to grasp an idea like equality or justice, you can't look at the equal and just or unjust things in the world around you, you have to somehow ascend to or maybe remember some kind of idea of equality and justice and this would be a Platonic form, and it would be different from the things that partake in the form.

Before the 3rd century you're having several philosophical schools still as a going concern. You have not only the Platonists and the Aristotelians but you have Scepticism, you have Stoicism, you even have a little bit of Epicureanism. And what happens after Plotinus is that everybody becomes a Neo-Platonist. So if we then go forward to the Islamic world for example, Plotinus is immensely influential, and Neo-Platonism becomes at least one major component of mainstream Islamic philosophy as well.

The body distracts your soul.

There's going to be this realm of Platonic forms and then there's going to be this single mind, the 'nous', which grasps them.

This condition of uncertainty and unrest in the Roman Empire might explain why at Plotinus' philosophy encourages us to sort of flee from the physical world and towards the world of ideas.