The history of the chassidim goes hand-in-hand with the history of Toras HaChassidus. In every generation, Chassidus gave rise to individuals who were unique among chassidim in devoting their whole being heart, soul, and material resources to Toras HaChassidus and the chassidic style of avodah. Because of this, their names are remembered with praise and renown, and have been recorded permanently by succeeding generations.

Many chassidim achieved fame even outside the circles of Chabad Chassidus. Others were known during their lifetimes only among their fellow chassidim, and we have had to expend much time and effort in order to gather the research material needed for a proper review of the stories of these unique personalities.