Guglielmo Ferrero, Italian historian and journalist, was, at the beginning of this century, very well known indeed all over what was then not yet commonly called the Western world. Had Time magazine existed in the days of Theodore Roosevelt, Ferrero would undoubtedly have made its cover and had his cover story. As it was, his studies of ancient Rome, and especially his big five‐ volume work, The Greatness and Decline of Rome, translated into English as soon as its publication in Italian was completed in 1907, were favorite subjects for the lurid old "Sunday supplements" of the Hearst and the Pulitzer newspapers. I still have a memory of some sort of childish confusion between what the artists for one of them, in a piece on Ferrero, had made of what Nero did to Rome and what Nature had just done to San Francisco.
For Ferrero was a determined comparative historian. He managed in these studies of Roman history to bring in Tammany Hall, Teddy Roosevelt, the British Empire, and many of the names that figure in this book on the two French Revolutions. He had early collaborated with his father-in-law, the criminologist Cesare Lombroso, whose