The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known The weakness of human nature has to be known