Two classes (from 5770/ 2009) on the Alter Rebbe’s entire life (on a personal level) was an endless pursuit of absolute truth.
Class One, Emes (5770/ 2009).
Class One, Emes (5770/ 2009).
Class Two, Emes (5770/ 2009)
Class Two, Emes (5770/ 2009)
His Emes (5774/ 2013, long version, Beis Rivka).
Long Version
His Emes (5774/ 2013, short, Beis Midrash Linashim).
Short Version