if what the philosophers say is true, that we must not look for it anywhere without, but in all cases it is one and the same thing which is the cause of our doing or not doing something, of saying or not saying something, of being elated or depressed, of avoiding anything or pursuing: the very thing which is now the cause to me and to you, to you of coming to me and sitting and hearing, and to me of saying what I do say. And what is this? Is it any other than our will to do so? "No other." But if we had willed otherwise, what else should we have been doing than that which we willed to do?