From the Real (Chandogya Upanishad)

The Chandogya Upanishad is one of the most prominent among the major group of philosophical and mystical Sanskrit texts of ancient India. This passage talks about the One universal source.

Passage

These eastern rivers, dear, roll eastward ;
and the western, westward.
From the ocean to the ocean they go,
and in the ocean they are united.
And there they know no separateness, nor say :
This am I, this am I.
Thus indeed, dear, all these beings,
coming forth from the Real, know not, nor say :
We have come from the Real.

Charles Johnston. From the Upanishads. Thomas B Mosher, 1899.