The book is about Darwinian evolution and summarizes the topics covered in his earlier books, The Selfish Gene, The Extended Phenotype and The Blind Watchmaker.
Buku ini berisi tentang evolusi Darwinian dan ringkasan-ringkasan topik yang telah dibahas di buku Dawkins sebelumnya, yaitu The Selfish Gene, The Extended Phenotype, dan The Blind Watchmaker.