In this volume, two classic chassidic works of the Rebbe Rashab, Rabbi Sholom DovBer Schneersohn of Lubavitch, complement each other. The discourse entitled Tanu Rabbanan: Ner Chanukah (1982) celebrates the might of spiritual light which like the rays of the Chanukah lamp reaches out to illuminate a dark world; the discourse entitled Kol HaYotzei LeMilchemes Beis David (1900) celebrates the light that is generated when an individual musters the self-sacrificing might to "go out to the battles of the House of David," and to prepare himself and his environment for the coming of Mashiach. This historical and conceptual background to the latter discourse is richly depicted in this volume in an appendix written by the author's son and successor, Rabbi Yosef Yitzchak Schneersohn of Lubavitch, who was present when it was first delivered. The lucid translation is supplemented by source references, explanatory footnotes and a comprehensive glossary.