"Jeffrey Kottler has taken on a daunting challenge to examine the chaotic field of psychotherapy and abstract 'what works.' He makes his survey with wit, humility and clinical sophistication." --James F.T. Bugental, past president, California State Psychological Association

"Addressed to therapists but of interest to clients as well....Kottler anticipates the discovery of an integrated theory of therapy that will connect the essence of diverse methodologies, much as Newton's discoveries unified pre-seventeenth-century theories of physics."