Yosher Divrei Emet is an 18th-century work by Rabbi Meshullam Feivush Heller, a leader in the formative stages of the chasidic movement. The work is in the form of two lengthy letters to a friend living in the Land of Israel, detailing key chasidic teachings and practices. The first letter discusses issues related to the service of God, such as pride. The second letter discusses topics such as overcoming the evil inclination, prayer, Shabbat, and the holidays of Rosh HaShanah, Yom Kippur, and Sukkot. The two letters were first printed in 1792 as part of a work entitled Likkutim Yekarim, and were reprinted in 1905 as an independent work entitled Yosher Divrei Emet, words taken from the first letter’s opening.