Yahrtzeit of Rabbi Samson Rafael Hirsch (1808-1888), the leader of Torah Judaism in Germany during the tumultuous times of Enlightenment. Rabbi Hirsch argued that the era of Enlightenment meant not that Jews should abandon Jewish practice, but that religious freedom was an opportunity to observe Judaism without persecution and ridicule. He promoted a philosophy of "Torah im Derech Eretz" -- combining Torah with the modern world. Rabbi Hirsch's written works include: a six-volume commentary on the Torah; Horeb, a philosophical analysis of the 613 mitzvot; and an etymological analysis of the Hebrew language.