When one gives up the Christian faith, one pulls the right to Christian morality out from under one's feet. This morality is by no means self-evident. Christianity is a system, a whole view of things thought out together. By breaking one main concept out of it, the faith in God, one breaks the whole. It stands or falls with faith in God.
Friedrich NietzscheWhereas the man of action binds his life to reason and its concepts so that he will not be swept away and lost, the scientific investigator builds his hut right next to the tower of science so that he will be able to work on it and to find shelter for himself beneath those bulwarks which presently exist.
Friedrich NietzscheThat a person cannot and consequently will not defend himself, does not yet cast disgrace upon him in our eyes ; but we despise the person who has neither the ability nor the good will for revenge whether it be a man or a woman.
Friedrich Nietzsche