sentences:  The work has become a classic, and has been credited with correcting older estimates of Freud's level of originality and encouraging scholars to question the scientific validity of psychoanalysis.Critics have questioned the reliability of some of Ellenberger's judgments.Ellenberger presents a history of dynamic psychiatry, providing discussions of figures such as the doctor Franz Anton Mesmer, Sigmund Freud (the founder of psychoanalysis), the psychologist Pierre Janet, the psychotherapist Alfred Adler, and the psychiatrist Carl Jung.