Like the appearance of silver in mother of pearl, the world seems real until the Self, the underlying reality, is realized.
Adi ShankaraThus one should know oneself to be of the nature of Existence-Consciousness-Bliss[Sat-Chit-Ananda].
Adi ShankaraThe witness of the three states of consciousness [waking, dream and deep sleep] and of the nature of Existence-Consciousness-Bliss is the Self
Adi ShankaraGive up identification with this mass of flesh as well as with what thinks it a mass. Both are intellectual imaginations. Recognise your true self as undifferentiated awareness, unaffected by time, past, present or future, and enter Peace.
Adi Shankara