Letters 47.15

“Do you mean to say,” comes the retort, “that I must seat all my slaves at my own table?” No, not any more than that you should invite all free men to it. You are mistaken if you think that I would bar from my table certain slaves whose duties are more humble, as, for example, yonder muleteer or yonder herdsman; I propose to value them according to their character, and not according to their duties. Each man acquires his character for himself, but accident assigns his duties. Invite some to your table because they deserve the honour, and others that they may come to deserve it. For if there is any slavish quality in them as the result of their low associations, it will be shaken off by intercourse with men of gentler breeding.

Seneca, Letters to Lucilius 47.15, translated by Richard Mott Gummere