Freud stated that any line of investigation which recognizes transference and resistance, regardless of its results, was entitled to call itself psychoanalysis (Freud, 1914a, p. 16). Separately he wrote that psychoanalysis was the science of unconscious mental processes (Freud, 1925, p. 70). Combining these two ideas defines Essential Psychoanalysis: Any line of treatment, theory, or science which recognizes the facts of unconscious, transference, or resistance, and takes them as the starting point of its work, regardless of its results, is psychoanalysis. Freud formulated two conflicting definitions of psychoanalysis: Essential Psychoanalysis, applicable to all analysts regardless of their individuality and Extensive Psychoanalysis, modeled on his individuality. They differ in how psychoanalytic technique is viewed. For Essential Psychoanalysis, flexible recommendations constitute psychoanalytic technique, whereas for Extensive Psychoanalysis, rules constitute a key part of psychoanalytic technique.