Tat Tvam Asi teaching is found in the Chandogya Upanishad
and is the cornerstone of Hinduism. This universal teaching is revealed to
Svetaketu by his father Uddalaka
Just as the bees prepare honey by collecting the juices of
all manner of trees and bring the juice to one unity, and just as the juices no
longer distinctly know that the one hails from this tree, the other from that
one, likewise, when all these creatures have merged with the Existent they do
not know, realizing only that they have merged with the Existent.
Whatever they are here on earth, tiger, lion, wolf, boar,
worm, fly, gnat, or mosquito, they become that.
It is this very fineness which ensouls this entire world, it
is the true one, it is the soul. You are that – Tat Tvam Asi
Bring me a banyan fruit.
Here it is.
Split it.
It is split.
What do you see inside it?
A number of rather fine seeds.
Split one of them.
It is split.
What do you see inside it?
Nothing.
This very fineness that you no longer can make out, it is by
virtue of this fineness that the Banyan tree stands big.
It is this very fineness which ensouls this entire world, it
is the true one, it is the soul. You are that – Tat Tvam Asi