39. But if they insisted all too vehemently that they had given me some information, I used to smile and answer with delight: Take care that it was not my brother whom you told. For since we had everything in common, one spirit and one disposition, yet the secrets of friends alone were not common property, not that we were afraid of danger in the communication, but that we might keep faith by withholding it. Yet if we had a matter to be consulted about, our counsel was always in common, though the secret was not always made common. For although our friends spoke to either of us, so that what they said might reach the other; yet I know that secrets were for the most part kept with such good faith that they were not imparted even to the other brother. For this is a convincing proof that was not betrayed without which had not been imparted to the brother.