Jenner was an English physician and pupil of John Hunter, a pioneer in comparative anatomy and morphology. Jenner's invaluable experiments, beginning in 1796 with the vaccination of eight-year-old James Phipps, proved that cowpox provided i...

Sigmund Freud was an Austrian neurologist who became known as the founding father of psychoanalysis. In creating psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst, Freud...