Sigmund Freud, born Sigismund Schlomo Freud, was an Austrian neurologist who founded the discipline of psychoanalysis. Freud is best known for his theories of the unconscious mind and the mechanism of repression, and for creating the clinical method of psychoanalysis for investigating the mind and treating psychopathology through dialogue between a patient (or "analysand") and a psychoanalyst. Freud established sexual drives as the primary motivational forces of human life, developed therapeutic techniques such as the use of free association, discovered the phenomenon of transference in the therapeutic relationship and established its central role in the analytic process; he interpreted dreams as sources of insight into unconscious desires.