•Why it earns a slot
Why it earns a slot: it is the founding text of Neoplatonism, the filter through which Augustine and centuries of Christian, Islamic, and Renaissance thought inherited Plato, written by a man who dictated it whole from memory and never once looked back at the page.
A man who refused to be painted, never reread his own sentences, and wrote for a decade before showing anyone, tries to prove the soul and the divine are both one thing and many things at once.
This distillation is written from the freely available original, which is always the better read when you have the time: Project Gutenberg.