" God has not given us reason and the counsels and help of reason that we should despise them. This is what those men do who are either presumptuous or in a state of despair. When they say: “Whatever I do, I shall not hinder what must necessarily come to pass by a kind of fate,” this is the voice of those in despair. But the presumptuous are accustomed to make this boast: “If I have to live, I shall live even if I do not eat. God has promised life, therefore it does not matter whether I eat or do not eat.” But since we have God’s promises, we must take careful precautions not to tempt God by presumption and not to sin by despair. When you have a ladder, there is no reason for throwing yourself out of a window, nor should you go through the middle of the Elbe when you have a bridge. But each one should do what reason instructs him to do and commend the rest to God. He will grant fitting results. Here "

― Martin Luther , Lectures on Genesis: Chapters 31-37 (Luther's Works, #6)