Summary: So Heaven and Hell is the sequel to The Doors of Perception. You can read my review on The Doors of Perception here. Huxley elaborates on what mescaline and lysergic acid experiences are like, as well as analyzing the history of these visionary experiences in art and mythology. Finally, he discusses why some people have pleasant experiences, while others have hellish ones.
Likes: Heaven and Hell was interesting to me because of the way Huxley compared common elements in drug experiences to art and mythology. As always, his writing is easy to understand, but still brilliant.
Dislikes: I didn’t quite like Heaven and Hell because, again, I cannot agree with any of the conclusions he makes.
TL;DR: However, I would recommend Heaven and Hell to anyone who is interested in philosophy or psychology. Anyone who read The Doors of Perception should also read Heaven and Hell, because it really does go so much more into detail on a lot of the same topics Huxley addressed previously.
Agree? Disagree? Let me know in the comments!