We will not rest until we destroy all the Erev Rav, Klipot and bring the age of Mashiach
Sefer Hamidos on Shmiras Habris
Tanis Without Daas is Not a Tanis
A fast without knowledge is not a fast. (needs better translation, maybe: A fast that was not premeditated is not counted as a fast).
(Sefer Hamidos, Teshuva 64)
Source: Warriors of Holiness