This book will not please the strict polemicist, empiricist, or, for that matter, the strict clinician, who insists on one approach that is best or preferred. "As scientists, we are called on not merely to record behavior in this or that domain, but to explain it" (p. 9). This is one of many sage arguments for a systemic versus a linear, mechanistic model. Millon and his associates are keenly aware of our penchant as social scientists, theoreticians, and clinicians to adopt one perspective to the exclusion of considering each others' perspectives and to indulge in either-or polarities. Succinctly, they state, "Once a particular level [i.e., level of data] is chosen, it leads to conceptualizations and conclusions that do not readily translate into the vocabulary of others." Although this book is in part about taxonomies and classifications, and Millon and his collaborators allow for their importance, they argue that personality cannot and should not be reduced to them. Rather, the primacy and complexities of a person must be understood and assessed. A "short paragraph" can do it better than a short diagnostic label.