Rav Zilber spoke in English to a packed audience at Aish Kodesh about Chassidus' view of Chassidus. He explained the Chassidus was a hisgalus, a revelation, of something that already existed long before. He took us into the Beis Medrash of Rebbi Shimon Bar Yochai, back to the times of the Ari HaKadosh, and the Ba'al Shem Tov, with the very great difficulties of those times; and explained, among many other things how, even in Chassidus, there is a difference between the Chassidus of Shabbos and the six days of the week. A beautiful and spell-binding shiur.