We are biological creatures. We are born we live we die. There is no transcendent purpose to existence. At best we are creatures of reason and by using reason we can cure ourselves of emotional excess. Purged of both hope and fear we find courage in the face of helplessness insignificance and uncertainty.
There will one day spring from the brain of science a machine or force so fearful in its potentialities so absolutely terrifying that even man the fighter who will dare torture and death in order to inflict torture and death will be appalled and so abandon war forever.