Book excerpt: The Language of the Body, originally published as Physical Dynamics of Character Structure, brilliantly describes how personality is expressed in the form and function of the body. The body is the key to understanding behavior and working with the body is the key to psychological health. The Language of the Body outlines the foundations of character structure: schizoid, oral, masochistic, hysteric, and phallic narcissistic personality types. Dr. Lowen examines the relationship between psychoanalytic theory and body therapy.