This book is a product of a strange mixture of neurology, biology, psychology, psychedelia, occultic arts, world traveling, and prison experience. Timothy Leary puts it all in here to write something that isn't quite a philosophy tract, but isn't an ideology propaganda either. He doesn't write like a scientist and you have to be hip to the lingo to follow what's being said. For example he isn't afraid to call certain groups of people Insects, and other invented terms without defining them. I find it fun, because the context clues makes it somewhat obvious, and I know I'd do the same thing if I had to write this.
The main thing I enjoyed in the book is despite references Rome falling, French Revolution, America falling apart often, borderline determinism, humans going extinct, it retains a spirit of optimism. Everything is evolving the right way, Earth is working with us and whatever happens will be good for the species- including extinction, or he'd probably call it ascension.
So what is exactly Dr. Leary so happy about?
He claims there are circuits of humans development, it's genetic but not permanent. A more egalitarian caste system. You're imprinted by your genes and conditioned by society to be set into a circuit, you gotta do all kinds of shit to adapt, or be content within your circuit. (Both options are OK, it ain't a race.)
Eventually some enlightened fellow gets to such a high circuit that breaks into a new, undiscovered, caste. This guy is a mutation. Like-minded enlightened fellows start interacting with each other, they start families have kids, and a whole new set of humans are imprinted by these mutants.
So this is how history goes, progress is built on the backs of countless generations of mutants. Anthill people keep things sturdy so the whole damn thing doesn't fall apart.
However this security, and collectivization is something mutants just don't want a part of, they don't want to be restrained. They're wild, they need drugs and free thinking, they don't have time for 9-5 jobs and being parents. That makes them prone to migration. Migration is a magic thing, it's a form of population control and technological catalyst. Now mutants and bugs all have conquered this Earth, so the next point is obviously the stars.
Timothy Leary gets too optimistic here, and starts making predictions. They're funny because he's wrong and sad because he's wrong. He was too optimistic. Engineering hasn't caught up with this book, but doesn't mean it can happen. Things are jut behind schedule.
Overall it's a hard to recommend book, yet it's still fun and has breathes positive energy. I feel it requires a few years of dedication to scifi novels to fully appreciate.