7 But if, say my opponents, no damage is done to human affairs by you, whence arise those evils by which wretched mortals are now oppressed and overwhelmed? You ask of me a decided statement, which is by no means necessary to this cause. For no immediate and prepared discussion regarding it has been undertaken by me, for the purpose of showing or proving from what causes and for what reasons each event took place; but in order to demonstrate that the reproaches of so grave a charge are far removed from our door. And if I prove this, if by examples and by powerful arguments the truth of the matter is made clear, I care not whence these evils come, or from what sources and first beginnings they flow.
Source: Against the Heathen (New Advent)