Since drugs became popular, there have been countless books on what to do with them. The most interesting are those of a creative kind by high-profile writers: De Quincey, Baudelaire, Aldous Huxley, Henri Michaux, William Burroughs, Carlos Castaneda. The most useful, so far as social policy is concerned, are those by low-profile operators in the field: scientists, doctors, psychiatrists, social workers, police.