The attempt to destroy the ego or the mind through sedans(practices) other than atma-vichara(self inquiry) is just like the thief pretending to be a policeman to catch the thief, that is, himself. Atma-vichara (self inquiry) alone can reveal the truth that neither the ego nor the mind really exists, and enable one to realize the pure, undifferentiated being of the Self or the absolute. Having realized the Self, nothing remains to be known, because it is perfect bliss, it is the all.