I and the Not I  A Study in the Development of Conscious   – M. Esther Harding

Biologists, who in attempting to discover the nature of consciousness in animals, found themselves obliged to recognize that each creature sees only what concerns himself; everything else he seems to be blind.

 This reminds me of the saying, “A Frog can only see what he can eat.”

Human beings, having an animal and spiritual nature, given circumstance can descend to the level of a frog, who can only see what he can eat or by the spark of the divine rise to the occasion, limiting themselves for the sake of others.  JWS