-David Sloan Wilson, co-author of Unto Others: The Evolution and Psychology of Unselfish Behavior:

Howard Bloom believes that the Leviathan, or society as an organism, is not a fanciful metaphor but an actual product of evolution. The Darwinian struggle for existence has taken place among societies, as well as among individuals within societies. We do strive as individuals, but we are also part of something larger than ourselves, with a complex physiology and mental life that we carry out but only dimly understand. With this bold vision of evolution and human behavior, Bloom has raced ahead to explore possibilities that the timid scientific herd may well be forced to follow.

Dorion Sagan, author of Biospheres and co-author of Into the Cool: The New Thermodynamics of Life:

The Thales of the Internet, H. Bloom thinks what he wants, writes what he thinks and performs his synthesis with a good heart, uncompromising truth, creative brain and mountains of evidence. From the bacterial web of Eschel Ben Jacob to the scientific side-lining of Professor Ling, we see the daunting power of groups that interact and sacrifice their members in order to thrive and evolve.

Douglas Rushkoff, author of Ecstasy Club, Media Virus, Coercion:

A modern-day prophet, Bloom compels us to admit that evolution is a team sport. This is a picture of the universe in which human emotions find their basis in the survival of matter, and the atoms themselves are held together with love. I am awestruck.

Lynn Margulis, Distinguished University Professor, University of Massachusetts, and recipient of a 1999 National Medal of Science

This lusty tome generated by Bloom's voracious reading habit and extraordinary talent for explanation proclaims that groups of individuals -- from people to vervet monkeys to bacteria -- organize themselves, create novelty, alter their surroundings and triumph to leave more offspring than loner individuals. A stunning commitment to scientific evidence, this sequel to The Lucifer Principle ought to purge the academic world of "selfish genes" and the neodarwinist dogma of individual selection.

Robin Fox, University Professor of Social Theory, Rutgers University, and co-author of The Imperial Animal:

In a superbly written and totally original argument, Howard Bloom continues his one-man tradition of tackling the taboo subjects. With a marvelously erudite survey of life and society from bacteria to the Internet, he demonstrates that group selection is for real and the group mind was there from the start. What we are entering now is but the latest phase in the evolution of the global brain. This is a must read for professionals and laymen alike.

Elizabeth Loftus, past president, American Psychological Society, and author of Witness for the Defense and The Myth of Repressed Memory:

Howard Bloom's Global Brain is filled with scientific firsts. It is the first book to make a strong, solidly backed, and theoretically-original case that we do not live the lonely lives of selfish beings driven by selfish genes, but are parts of a larger whole. It is the first to propose that sociality was implicit in the start of the universe--the Big Bang. Global Brain is the first book to present strong evidence that evolutionary, biological, perceptual, and emotional mechanisms have made us parts of a social learning machine--a mass mind which includes all species of life, not just humankind. It is the first to take this idea out of the realm of mysticism and into the sphere of hard-nosed, data-derived reality. And it is one of the few books which carry off such grand visions with energy, excitement, and keen insight.