During the Dutch invasion and occupation of Brazilian soil Father António Vieira preached several sermons of great religious and patriotic ardour. He celebrated victories (1638), warned against inappropriate euphoria (1639), comforted men and cried to God for help after noisy defeats (1640). He joined sound realism and intrepid faith in this mission. Peace shall come only from war. However only in God is the key to victory, because he is the lord of history. Philosophy of history turns theology of history.