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98 robust for their necessary purposes, but the other erect; useless indeed for such servile labours, but fit for civil life It is clear then that some men are free by nature, and others are slaves"

If we ask ourselves what is the matter with Aristotle's argument, we find that he has begun by erecting a great barrier between himself and the facts. When he had said that those who are slaves are by nature intended to be slaves, he at one stroke excluded the fatal question whether those particular men who happened to be slaves were the particular men intended by nature to be slaves. For that question would have tainted each case of slavery with doubt. And since the fact of being a slave was not evidence that a man was destined to be one, no certain test would have remained. Aristotle, therefore, excluded entirely that destructive doubt. Those who are slaves are intended to be slaves. Each slave holder was to look upon his chattels as natural slaves. When his eye had been trained to see them that way, he was to note as confirmation of their servile character the fact that they performed servile work, that they were competent to do servile work, and that they had the muscles to do servile work.

This is the perfect stereotype. Its hallmark is that it precedes the use of reason; is a form of perception, imposes a certain character on the data of our senses before the data reach the intelligence. The stereotype is like the lavender window-panes on Beacon Street, like the door-keeper at a costume ball who judges whether the guest has an appropriate masquerade. There is nothing so obdurate to education