The witness of the three states of consciousness [waking, dream and deep sleep] and of the nature of Existence-Consciousness-Bliss is the Self
Adi ShankaraWho but the Atman is capable of removing the bonds of ignorance, passion and self-interested action?
Adi ShankaraWhat is enquiry into the Truth? It is the firm conviction that the Self is real, and all, other than That, is unreal.
Adi ShankaraDo not be proud of wealth, people, relations and friends, or youth. All these are snatched by time in the blink of an eye. Giving up this illusory world, know and attain the Supreme.
Adi ShankaraJust as a stone, a tree, a straw, grain, a mat, a cloth, a pot, and so on, when burned, are reduced to earth (from which they came), so the body and its sense organs, on being burned in the fire of Knowledge, become Knowledge and are absorbed in Brahman, like darkness in the light of the sun.
Adi Shankara