Happiness in Judaism name "Hasidim" was coined, one of the names used to refer to the followers of the new movement was "di freilicha" (), “the happy ones.” The founder of Hasidism, Rabbi Yisroel Baal Shem Tov (1698–1760) is quoted as saying "In the eyes of the Hasidim, joy is considered a biblical commandment, a mitzvah." The Hasidic Rebbe, Rabbi Nachman of Breslov (1772–1810) would often say "It is a great mitzvah (commandment) to live in the state of happiness" ("mitzvah gedolah lihiyot b'simcha tamid", ). And Rabbi Aharon of Karlin (I), one of the early Hasidic masters, reportedly said, "There is no
Mitzvah tank Judaism or displaying images of Rabbi Schneerson and about Moshiach's imminent arrival. Some Mitzvah Tanks have external speakers attached which are used to play klezmer-style music. The tanks, usually manned by young male Lubavitch students in the Yeshiva of Tomchei Temimim, park in areas with heavy people-traffic and seek Jews to perform "Mitzvahs" by asking passers-by: "Are you Jewish?" Lubavitchers manning the tank will usually hand out brochures or cards with information about performing "mitzvot" and about the coming of Moshiach. They encourage passerby to perform mitzvot with an emphasis on those part of the Chabad mitzvah campaigns, and assist