Behold, how great a love the Father has bestowed on us, that we should be called children of God! For this cause the world doesn't know us, because it didn't know him.

 (i) It is a duty which has been inculcated into the Christian from the first moment that he entered the Church. The Christian ethic can be summed up in the one word love and from the moment that a man pledges himself to Christ, he pledges himself to make love the mainspring of his life. 