To better understand the essence of Chasidus, we need to first understand the essence of Moshiach. The end of exile, the proliferation of G-dly knowledge, the change in the natural order, and even the revelation of eternality within time are all but manifestations of the essential point of Moshiach. The essence of Moshiach is that the "yechida" of all the worlds will be revealed.
(Chs. 4-5)
