Tat Twam Asi - You Are That ~ Chhandogya Upanishad

Through spiritual wisdom, O' beloved one,
We come to know that all life is One.

In the beginning was only Being,
One without a second.

Out of himself he brought forth the cosmos
And entered into everything in it.

There is nothing that does not come from him.
Of everything he is the inmost Self.

He is the truth; he is the Self supreme.
You are that, you are that. 
         Tat Twam Asi

                 ~ Chhandogya Upanishad ~