Boston Review, which has been my refuge, my soapbox, and my part-time employer for the past 10 years, has published  an essay of mine on Arthur Koestler, here–or, more precisely, an essay of mine on Michael Scammell's biography of Koestler, the reading of which reignited my interest in the great Anglo-Hungarian polymath, whom I revered during my youth. The Scammell bio has been widely reviewed–here, by Christopher Hitchens–and none of the reviewers has failed to observe that Koestler, who was as famous in his day as, oh I don't know, Hitchens is in his, has been totally forgotten; well, that isn't quite true. Unknown by the uneducated, yes, but no one halfway literate doesn't know Darkness at Noon, Koestler's definitive apercu of Stalinism; it stands alongside, or even slightly above, Orwell (who was founding member, with Koestler, of an Orwell-Koestler mutual admiration society).  And reading Darkness naturally makes the reader want to sample other products of the same pen, this leading to Koestler's other novels, among which Arrival and Departure and The Call Girls stand out; fine novels, but not on the masterpiece level of Darkness and his stunning two-volume autobiography, Arrow in the Blue and The Invisible Writing. And by all means dip into The Sleepwalkers, a typical Koestlerian take on the great astronomers Tycho Brahé, Copernicus, Kepler and Galileo; he loved science, and ranged wide in his writings on it, and deplored the "cold war" between science and the humanities. As for that other cold war, the one between Communism and the West, the likelihood of the latter's victory was greatly enhanced by two men: Koestler and Aleksandr Solzhenitsyn.