Europe’s revelation of hitherto latent human powers had negative faces too, of which imperial expansion was one. The domination of weaker peoples brought suffering and destruction everywhere, often worsened by the limits to European power that placed stable rule over conquered populations out of reach, so that the dominators had regular recourse to brutal exemplary punishments, often justified by the racist discourse generated by the need to justify the whole system. The capacity of formal imperialism to endure was undermined by the seeds it bore of its own overcoming: first, the violent and expensive wars between imperial rivals and then the disclosure to dominated peoples of the knowledge and techniques employed to subject them. But from the beginning these horrors generated internal protests and critiques, often based on a heightened realization of and respect for cultural difference. By the middle of the eighteenth century a phalanx of distinguished and influential voices was raised against the system, never strong enough to rein it in, but testimony to the persistence of the more humane and generous attitude manifested earlier.