'Yah pashyati sa pashyati' — whoever sees, truly sees. That phrase lands like a bell. And what must one see? The Supreme Lord dwelling equally in all beings.
Bodies are perishable. Every creature's form will one day end. But the imperishable Paramatma seated within those perishable forms never ends. To perceive that undying presence — the same in the ant and the elephant, in the saint and the stranger — is to finally use the eyes of knowledge.
Picture many clay lamps, each with a different shape and color. Yet the flame burning inside each one comes from the same fire. The lamps are different on the outside, but the light within is one. Seeing that single light everywhere — that is true seeing.