In response to the challenges of integrating Jewish life with Enlightenment values, German Jews in the early 19th century began to develop the concept of Reform Judaism, adapting Jewish practice to the new conditions of an increasingly urbanized and secular community. Staunch opponents of the Reform movement became known as Orthodox Jews. Later, members of the Reform movement who felt that it was moving away from tradition too quickly formed the Conservative movement. At same time, the notion "traditional Judaism" includes the Orthodox with Conservative or solely the Orthodox Jews.