Perfect happiness, in order to be perfect, must carry with it the assurance that the happiness won’t cease; that it will not be snatched away. But no one has ever had such assurance; the mere fact of death serves to contradict it. Yet why should Nature implant in everyone a desire for something unattainable? I can think of no more than two answers: either Nature is consistently mad and perverse; or after this life there’s another, a life where this universal desire for perfect happiness can be fulfilled.