There must be someone who would re-read with us for the twentieth time

Sara my best friend and a truly invigorating soul sent me this:

".. and I tell to myself that in the whole adventure of life, there must be someone who would re-read with us for the twentieth time, if need be, a questionable page; someone who bolsters our courage and approves, or sometimes disputes, our ideas; who shares with us, and with equal fervor, the joys of art and of living, the endless work which both require, never easy but never dull; someone who is neither our shadow nor our reflection, nor even our complement, but simply himself; someone who leaves us ideally free, but who nevertheless obliges us to be fully what we are.

Hospes Comesque ("guest and companion").