On top of that he was a tremendous speaker. Tyrants don’t usually bother to justify their actions much beyond “because I can and I want to.” (Cf. current US administration’s discourse over Greenland.)

But Robespierre was a believer in capital-R Reason, and he had to face the National Assembly all the time. So his speeches are a fascinating gradual slippery slope from “it would be good if Jews and actors would get to vote too” to “only Terror will purify the world.”

I’ve got a little book of them, aptly titled “Les plus beaux discours de Robespierre” — his most beautiful speeches. It would be an odd adjective to use about almost any other political monster’s output (excepting Antiquity and the distance we have to them).