Our relation with the animals finds its expression especially in the amazing variety of benefits they provide for us in their guidance, protection, and companionship. Beyond these modes of assistance, they provide a world of wonder and meaning for the mind—beauty for the imagination. Even beyond all these, they provide an emotional intimacy that is unique, that can come to us from no other source. The animals can do for us, both physically and spiritually, what we cannot do for ourselves or for each other. These more precious gifts they provide through their presence and their responsiveness to our inner needs.

Chapter 3, p. 39 - Evening Thoughts