“The Ruffian” is great title for Ian Leslie’s Substack given his predilection for roughing up lazy thinking.

Thanks to the paucity of my education and cultural life I have come late to Isaiah Berlin, the noted philosopher and historian of ideas whose thinking provided such a guiding light to the 20th Century. But I’m definitely a fan now. I’d heard the name, of course, but would have been hard-pressed to tell you why he was well-known.