The book was called Imperialism; it was a devastating volume. For here was the most important and searing criticism which had ever been levied against the profit system. The worst that Marx had claimed was that the system would destroy itself; what Hobson suggested was that it might destroy the world.
Chapter VII, The Underworld of Economics, p. 188 (on John Atkinson Hobson...) - The Worldly Philosophers (1953)