The Didascalicon

Altogether, the power of the soul in vivifying bodies is discovered to be of three one kind supplies life to the body alone in order that, on being born, the body may grow and, by being nourished, may remain in existence; another provides the judgment of sense perception; a third rests upon the power of mind and reason.

Altogether, the power of the soul in vivifying bodies is discovered to be of three one kind supplies life to the body alone in order that, on being born, the body may grow and, by being nourished, may remain in existence; another provides the judgment of sense perception; a third rests upon the power of mind and reason.