"The Chanukah Lights remind us in a most obvious way that illumination begins at home, within oneself and one’s family, by increasing and intensifying the light of Torah and Mitzvos in the everyday experience, even as the Chanukah Lights are kindled in growing numbers from day to day. But though it begins at home, it does not stop there. Such is the nature of light that when one kindles the Chanukah Lights, they are expressly meant to illuminate the “outside,” symbolically alluding to the duty to bring light also to those who, for one reason or another, still walk in darkness."
-Rabbi Menachem Mendel Schneerson