Rav Tzadok is essentially explaining the Torah of the Izhbitzer. A brief history of Rav Tzadok and how he ended up in Izhbitz. Korach's challenge to Moshe can be explained through the kabbalistic concepts of igulin (circles) and yosher (linear) arrangements of the sefiros. There is a revealed hashgacha (Divine Providence) and a hidden one. At the end of time, the mystery of how everything revolved around the Jewish people will be revealed. Korach incorrectly thought that the full tikkun (repair) of Creation was supposed to happen after receiving the Torah on Mt. Sinai. Communism and Christianity took away free choice from humanity. A tallis and a home are considered surrounding lights.