Commentary by Swami Muni Narayana Prasad on Bhagavad Gîtâ IV.35

"Everything living and not living together constitute the perceptual world. Conducting enquiries into Reality, you will come to perceive that the entire visible world exists as your experience, that its existence is in your experience, in you, the perceiver.

"Try to find out how extensive your perceiving mind or consciousness is; you will then realize that all the worlds are in it, that it is infinite in its extension.

"That which is of infinite extensiveness cannot be more than one in number either. This infinitely extensive one mind or consciousness is nothing but 'Me' [the One speaking as Krishna in the Bhagavad Gita], the Bhagavân, or Brahman. This 'Me' is that which manifests as this endlessly extensive cosmic system.

"All the worlds, thus, you will first see in yourself, and then yourself in 'Me' [the One]."

Life's Pilgrimage Through The Gîtâ, A Commentary on the Bhagavad Gîtâ, by Swami Muni Narayana Prasad; D.K. Printworld Ltd., New Delhi, 2005.