Mankind is so absorbed in life's pleasures and pains that a man has hardly a moment to think what a privilege it is to be human. Life in the world no doubt contains more pain than pleasure; and that which one considers to be pleasure costs so much that when it is weighed against the pain it costs it too becomes pain, and since man is so absorbed in his worldly life he finds nothing but pain and grievance in life. Thus until he changes his outlook he cannot understand the privilege of being human.