Sarvam khalvidam brahma tajjalaniti santa upasita atha khalu…

Sarvam khalvidam brahma
tajjalaniti santa upasita
atha khalu kratumayah puruso
yatha-kratur-asmin-loke puruso
bhavati tathetah pretya bhavati
sa kratum kurvita

-Chandogya Upanishad, 3.14.1

All this is Brahman.
(This) is born from, dissolves in, and exists in That.

Therefore, one should meditate by becoming calm.

Because a person is identified with (one’s) conviction, (therefore) just as the conviction a person has in this world, so does one become after departing from here. Therefore one should shape one’s conviction.

tat tvam asi – That Thou art

tat tvam asi – “Thou art That”

Chandogya Upanishad 6.8.7, Sama Veda

A Mahâvâkya from the Sâmaveda

Chândogya Upanisad 6.8.7, etc.

sa ya eso ‘nimâ aitadâtmyam idam sarvam, tat satyam, sa âtmâ. tat tvam asi, Svetaketo.
Olivelle (p. 152): “The finest essence here—that constitutes the self of this whole world; that is the truth; that is the self (âtman). And that’s how you are, Svetaketu.”

Hume (p. 246): “That which is the finest essence—this whole world has that as its soul. That is reality (satya). That is Âtman (Soul). That art thou, Svetaketu.”

Radhakrishnan (p. 458): “That which is the subtle essence (the root of all) this whole world has for its self. That is the true. That is the self. That art thou, Sv