Hitch-22 on Karl Marx: His Life and Environment: “I acted as host to Isaiah Berlin, our guest as an invited speaker on the subject of his very first published book, the life and thought of Karl Marx.”
Thinking, Fast and Slow on The Hedgehog and the Fox: “He uses the terminology from Isaiah Berlin's essay on Tolstoy, "The Hedgehog and the Fox." Hedgehogs "know one big thing" and have a theory about the world.”