'Friendship can be a dangerous enemy, a seduction of the mind lying beyond the reach of investigation. Out of a game and a jest came an avid desire to do injury and an appetite to inflict loss on someone without any motive on my part of personal game, and no pleasure in settling a score. As soon as the words are spoken "Let us go and do it," one is ashamed not to be shameless.'
Augustine of Hippo, Confessions, p.34.
