Write a short note on What is the meaning of Tattvmasi in Uddyalaka’s exposition ?

"Tattvamasi" is a profound statement found in the Chandogya Upanishad, attributed to the sage Uddalaka. It is a Mahavakya, or great aphorism, that encapsulates the essence of Advaita Vedanta philosophy. "Tattvamasi" translates to "That thou art" or "You are That" in English.

In Uddalaka's exposition, "Tattvamasi" is presented as a teaching to his son, Shvetaketu, to impart the understanding of the ultimate reality (Brahman) and the identity of the individual self (Atman) with Brahman. The statement signifies the non-dual nature of existence, asserting that the essence of the individual self is identical to the supreme reality.

Uddalaka uses the analogy of clay and various clay objects to illustrate the concept of identity between the individual self and Brahman. Just as different clay objects are made of the same clay substance, all individual selves are manifestations of the same supreme reality, Brahman. "Tattvamasi" emphasizes the underlying unity and oneness of all existence, transcending the apparent diversity and multiplicity of the world.

The teaching of "Tattvamasi" is a cornerstone of Advaita Vedanta philosophy, asserting that the ultimate reality is non-dual and indivisible. It invites individuals to realize their true nature as Brahman, beyond the limitations of the ego and the illusion of separateness. By recognizing the identity of the individual self with Brahman, one can attain liberation (moksha) from the cycle of samsara and experience the ultimate truth of existence.