These same adversaries of ours admit that they are grateful, yet not because it is honourable, but because it is profitable to be so. This can be proved to be untrue all the more easily, because it can be established by the same arguments by which we have established that to bestow a benefit is desirable for its own sake. All our arguments start from this settled point, that honour is pursued for no reason except because it is honour. Now, who will venture to raise the question whether it be honourable to be grateful? who does not loathe the ungrateful man, useless as he is even to himself? How do you feel when any one is spoken of as being ungrateful for great benefits conferred upon him by a friend? ............