Source
From the campaign:
Generations ago four infant minotaurs, a lost species, were pulled from the mud of the eternal river. Over centuries they develop a cultural philosophy to help them live among men: be contemplative, do not want, do not express your emotions, for breaking Silence in such a way is an expression of need. Be courageous. Act with wisdom. Work for justice. Do not use the names of women.
We employ them for menial and dangerous work. Pulling plows. Guarding wealthy estates. And for brutal entertainments.