This short article is by Ray Monk, who in 1990 published a biography of Wittgenstein, which I'd highly recommend to anyone wanting to know more about the guy's life and thought. Monk also wrote an excellent 2-volume biography of Bertrand Russell. This article seems to contain nothing not in his 1990 book. I found it a little depressing for him that the New Statesman is apparently paying him for an article that's a very condensed summary of part of what he wrote 30+ years ago..