There is a natural prejudice that leads man to scorn the one who has been his inferior, long after he has become his equal; real inequality produced by fortune or law is always followed by an imaginary inequality that has its roots in mores; but among the ancients this secondary effect of slavery came to an end. The emancipated man so strongly resembled the men who were born free that it soon became impossible to distinguish him from them. What was more difficult among the ancients was to change the law; what is more difficult among modern peoples is to change mores, and for us the real difficulty begins where in antiquity it ended. This happens because among modern peoples the non-material and transitory fact of slavery is combined in the most fatal way with the material and permanent fact of the difference of race. The memory of slavery dishonors the race, and race perpetuates the memory of slavery.