Contains a liberal scattering of imaginative ideas, interspersed with whole chapters of dream experiences and / or out of body experiences (it is sometimes hard to tell the difference and sometimes there is no difference). There are also explanations and theories, which sometimes build on quantum mechanics. He admits though that he is not a physicist so readers can give them as much credence as they like.
Overall I enjoyed the book but, as is becoming a bit of a refrain in my reviews, it could have done with a stronger-willed editor.