Hilary Mantel said this quote
“ Talking to Robespierre, one tried to make the right noises; but what is right, these days? Address yourself to the militant, and you find a pacifist giving you a reproachful look. Address yourself to the idealist, and you’ll find that you’ve fallen into the company of a cheerful, breezy professional politician. Address yourself to means, and you’ll be told to think of ends: to ends, and you’ll be told to think of means. Make an assumption, and you will find it overturned; offer yesterday’s conviction, and today you’ll find it shredded. What did Mirabeau complain of? He believes everything he says. Presumably there was some layer of Robespierre, some deep stratum, where all the contradictions were resolved. ”