" Our affections are the motions of our minds. Joy is expansion of the mind; sorrow, contraction of the mind; desire, a forward movement of the mind; and fear, the flight of the mind. For thou art expanded in mind when thou art glad; contracted in mind when thou art in trouble; thou movest forward in mind when thou hast an earnest desire; and thou fleest in mind when thou art afraid. "

― Augustine of Hippo , The Complete Works of Saint Augustine: The Confessions, On Grace and Free Will, The City of God, On Christian Doctrine, Expositions on the Book Of Psalms, ... (50 Books With Active Table of Contents)