Apollinarius adds to the body an unreasonable soul, as though the incarnation of God the Word had taken place not for the sake of reasonable beings but of unreasonable, while the teaching of the Apostles is that perfect man was assumed by perfect God, as is proved by the words “Who being in the form of God took the form of a servant;” for “form” is put instead of “nature” and “substance” and indicates that having the nature of God He took the nature of a servant.