Quotes from Adi Shankara

Each thing tends to move towards its own nature. I always desire happiness which is my true nature. My nature is never a burden to me. Happiness is never a burden to me, whilst sorrow is.

Thus one should know oneself to be of the nature of Existence-Consciousness-Bliss[Sat-Chit-Ananda].

The witness of the three states of consciousness [waking, dream and deep sleep] and of the nature of Existence-Consciousness-Bliss is the Self

From a clear knowledge of the Bhagavad-gita all the goals of human existence become fulfilled. Bhagavad-gita is the manifest quintessence of all the teachings of the Vedic scriptures.

But the jiva [living being] is endowed with ego and his knowledge is limited, whereas Ishwar is without ego and is omniscient.

Do 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.

There is sorrow in finitude. The Self is beyond time, space and objects. It is infinite and hence of the nature of absolute happiness.

What is enquiry into the Truth? It is the firm conviction that the Self is real, and all, other than That, is unreal.