Aristotle, On the Life-bearing Spirit (De Spiritu): A Discussion With Plato and His Predecessors on Pneuma As the Instrumental Body of the Soul : a discussion with Plato and his predecessors on pneuma

The work "De spiritu" is an important but neglected work by Aristotle. It clearly shows for the first time that Aristotle assumed a special body ("pneuma") as the a ~instrumenta (TM) of the soul. By means of this soul/body the soul forms the visible body of plants, animals and human beings.