Language and the need to control it created the need to construct laterality. Therefore it makes us conscious of our language and breaks us away from a purely automatic process. We can start to hear ourselves speak. Birds do not hear themselves sing. They have no relationship to their voice.
Gnosis is to make distinct from unconscious or to some extent automatic perception.
He goes on to say that any act that is dependent on gnosis is designated as praxis or acquired, as distinct from instinctive or involuntary. He feels that gnosis and praxis are both lateralized with speech.