This is a different kind of book about psychedelics. Rather than describing psychedelic experiences, it presents four future-oriented ideas 'coming over the psychedelic horizon', which illustrate the potential benefits of psychedelics for humanity: # Stanislav Grof's view of our minds as a way to understand works of art (looking at Disney's Snow White). # The evidence that psychedelic-occasioned mystical experiences can boost our immune systems. # Psychedelics as a way of adding new cognitive programmes to our thinking skills. # Applying the ideas from Part 3 to learning.