From DNA, Darwin, and Huxley to dominance, submission, and primates this book has it all. Carl Sagan was simply a shaman of words and wisdom, while being a prophet of science and rational thought. Shadow's of forgotten ancestors is Sagan's finest hour with unwavering skepticism and a passion unparalleled in the scientific community. I have read this book cover to cover twice, and still feel as though it will have more insight to offer as I begin to read it a third time. The book reveals the egocentric nature of man and his attitudes toward animals as lesser organisms based on ancient fears of his own past . Animals are very complex and intelligent, a sentiment that is for some a deplorable idea with atheist and Darwinian connotations. Sagan simply diffuses the idea to his readers that animals have the ability to feel complex emotions and acquire learned behaviors from parents, just as humans. It is not the author's intention to drag humans through the mud of the animal world, but, rather, lift the animals up to the level of humans by showing our similarities which include: reproductive strategies, behavior patterns, altruism, love, and the perpetuation of the species. Sagan offers an alternative view of the world, a world in which man shares the Earth with other organisms and accepts their differences rather than condemning them. Such an optimistic belief in a world that breeds hate, bias, and indifference. Anyone who reads this book and still believes man is superior to animals and holds a special place in the world, missed the entire point and needs their compassion spoon fed to them.