From the New Yorker: A Nervous Splendor.
There’s a telling description of genius by Arthur Schopenhauer, the German philosopher of romantic pessimism, whose work was well known to Ludwig, Paul, Gretl, and Hans: “Talent is like the marksman who hits a target which others cannot reach; genius is like the marksman who hits a target, as far as which others cannot even see.” That seems to have been the Wittgenstein way: trying to hit targets that others could not see. But if ordinary mortals cannot spot the bull’s-eye, how do they know whether it has been hit? According to Schopenhauer, they just have to accept the evidence of genius on faith, which is what Ludwig’s admirers often did. When Ludwig attacked some of Russell’s ideas, Russell wrote to Ottoline Morrell, “I couldn’t understand his objection-in fact he was very inarticulate-but I feel in my bones that he must be right.” Other philosophers who met Ludwig reported the same feeling.