" Passing through the minds of other men, joined to their experiences in war, territorial conquests, and colonization, Hobbes' one-sided picture of life as a constant struggle for power motivated by fear, became the foundation of both, the practical doctrines of imperialism and the ideal doctrine of machine-conditioned progress, as both were carried into the nineteenth century as the Malthus-Darwin 'struggle for existence.' The latter was liberally interpreted by Dsrwin's contemporaries as the license to exterminate all rival groups or species. "

― Lewis Mumford , The Pentagon of Power (The Myth of the Machine, Vol 2)