This is an important and valuable book, with the arguments coming straight from the horses' mouths. Even if readers do not change their minds, they will at least be better informed in their prejudices. Biologist This book focuses on the numerous controversies in phylogenetic theory and the underlying philosophies which are of importance to a diverse audience. Scientists, conservationists, and students of biology will find that this book provides a critical evaluation of the literature on this complex field. Southeastern Naturalist