Mid-19th century Beginning of the rise of classical Reform Judaism. Mid-19th century Rabbi Israel Salanter develops the Mussar Movement. While teaching that Jewish law is binding, he dismisses current philosophical debate and advocates the ethical teachings as the essence of Judaism. Mid-19th century
19th century 1800s. c. 1800 – Franz Joseph Gall developed cranioscopy, the measurement of the skull to determine psychological characteristics, which was later renamed phrenology; it is now discredited.