More than forty years ago, Dr. Aaron T. Beck's pioneering "Depression: Causes and Treatment" presented the first comprehensive account of all aspects of depression and introduced cognitive therapy to health care providers and patients struggling with one of the most common and devastating diseases of the modern age. Since that classic text first appeared, the appreciation of the multifaceted nature of mood disorders has grown, and the phenomenological and biological aspects of psychology are increasingly seen as intertwined. Taking these developments into account, Beck and his colleague...