How can you teach someone the value of something he has thrown away deliberately? 2He must have thrown it away because he did not value it. 3You can only show him how miserable he is without it and bring it near very slowly, so he can learn how his misery lessens as he approaches it. 4This conditions him to associate his misery with its absence, and to associate the opposite of misery with its presence. 5It gradually becomes desirable, as he changes his mind about its worth.