All this, whatsoever moves on earth, is to be hidden in the Lord (the Self).
   Isa Upanishad, verse 1, trans. F. Max Müller (SBE vol. I). sacred-texts.com

The Heart Sutra

[paraphrase] Form is emptiness and emptiness is form: nothing has a fixed separate self, and that lack is not some other place, it is right here in things.
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Alan Watts, The Way of Zen (1957)

[paraphrase] Watts presented Zen to Western readers as a way of seeing rather than a doctrine, the self as a process and not a thing.
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The I Ching and the Tao

Over on the Daoism shelf.
sacred-texts.com