 Early medieval medical theory of the emotions concentrated on the Galenic ideas of the humors and the system of the spirits, the vitalizing spirits in the heart and the psychic spirits in the nerves and the brain. In the Pantegni (Theor. VI.110–114), the physical aspects of the emotions were dealt with as slow or quick movements of the vital spirits towards the heart or away from it. (See also the translation by Stephen of Antioch, V.38, p. 69.) This led to a popular medical classification of emotions: