21. Neither ought any one to have joy in himself, if you look at the matter clearly, because no one ought to love even himself for his own sake, but for the sake of Him who is the true object of enjoyment. For a man is never in so good a state as when his whole life is a journey towards the unchangeable life, and his affections are entirely fixed upon that. If, however, he loves himself for his own sake, he does not look at himself in relation to God, but turns his mind in upon himself, and so is not occupied with anything that is unchangeable. And thus he does not enjoy himself at his best, because he is better when his mind is fully fixed upon, and his affections wrapped up in, the unchangeable good, than when he turns from that to enjoy even himself. Wherefore if you ought not to love even yourself for your own sake, but for His in whom your love finds its most worthy object, no other man has a right to be angry if you love him too for God's sake. For this is the law of love that has been laid down by Divine authority: "Thou shalt love thy neighbour as thyself;" but, "Thou shalt love God with all thy heart, and with all thy soul, and with all thy mind:" so that you are to concentrate all your thoughts, your whole life, and your whole intelligence upon Him from whom you derive all that you bring. For when He says, "With all thy heart, and with all thy soul, and with all thy mind," He means that no part of our life is to be unoccupied, and to afford room, as it were, for the wish to enjoy some other object, but that whatever else may suggest itself to us as an object worthy of love is to be borne into the same channel in which the whole current of our affections flows. Whoever, then, loves his neighbour aright, ought to urge upon him that he too should love God with his whole heart, and soul, and mind. For in this way, loving his neighbour as himself, a man turns the whole current of his love both for himself and his neighbour into the channel of the love of God, which suffers no stream to be drawn off from itself by whose diversion its own volume would be diminished.