Handbook of Spirituality and Worldview in Clinical Practice is divided into three parts. Part 1 is an introductory chapter by Dr. Armand Nicholi that lays the groundwork for the rest of the volume. Dr. Nicholi gives a clear and well-organized discussion of the concept of worldview, drawing on the writings of Freud. Worldviews can be divided into two major categories. The first includes the belief that nothing exists except the physical realm of matter-energy ("materialism"), that life emerged from nonlife through chemical processes alone, and that the universe came into existence on its own out of nothing by pure chance. The second category includes beliefs that there is some transcendent or spiritual realm. The primary examples are theistic faiths (Islam, Christianity, Judaism, and Hinduism). Also in this category is monism, the belief (characteristic of Buddhism) that the physical realm is an illusion only and that the transcendent is all that really exists. Dr. Nicholi correctly points out that, since the negative is impossible to prove, atheism is inherently illogical. Indeed, the atheist relies on "faith" as much as does the theist. He concludes, "No clinician, regardless of clinical skills, can know the patient without exploring that patient’s Weltanschauung" (p. 11).