Proslavery

Proslavery is an ideology that perceives slavery as a positive good.

Aristotle claimed that some people were natural slaves, and that it was in the best interests of these people to be enslaved. He writes in book I of the Politics:

Thomas Aquinas argued that slavery was not part of natural law, but nonetheless he defended it as a consequence of human sinfulness and necessary for the good of society. He viewed the natural state of humanity as that which had existed prior to the fall of man, in which slavery was non-existent; on those grounds, many commentators see him as rejecting Aristotle's claim that some people were naturally slaves, although it is a matter of controversy as to whether he fully rejected Aristotle's views on the matter.