"The Purusha-Sukta of the Rig-Veda commences by saying that all the heads, all the eyes, and all the feet that we see in this world are the heads, eyes, and feet of the Virat-Purusha, or the Cosmic Being. With one head, the Virat nods in silence; with another face He smiles; with a third one, He frowns; in one form, He sits; in another form, He moves; in one form, He is near; in another form, He is distant. So, all the forms, whatever they be, and all the movements and actions, processes and relations, become parts of the Cosmic Body, with which the Consciousness should be identified simultaneously. When you think, you think all things at the same time, in all the ten directions; nay, in every way."
- From the introduction to the Māndūkya Upanishad by Swami Krishnananda