This book contains what has to be the most beautiful description of the deep bond between Frodo and Sam I have ever read. It's a rather long quote, but it's very much worth giving, regarding the sundering of the two hobbits at the Grey Havens: "The main problem for the reader is how to separate in his or her mind two characters who have been a pair all through the novel, and who belong together. Despite his marriage, parenthood and obvious delight in Shire life, Sam is incomplete without Frodo, and Frodo an attenuated presence without Sam's earthliness. It is partly a problem of analogy, with Sam the `answer' or common feature that unites Blessed Realm and Shire." She then speaks of the resurrection of the dead: "Tolkien in his essay `On Fairy-Stories' refers to this as the `Great Eucatastrophe', when all our bodiliness shall share in some sense with our spirit - our Sam with our Frodo side. For Frodo hardly seems to have a body at all in the later parts of The Lord of the Rings, and even his pains back home in the Shire have a spiritual basis. Sam, on the contrary, is not just a reassuring physical presence but an active agent in the rebuilding of his community, and in forming human relationships. The true happy ending of the novel lies beyond the pages of the book, and yet is anticipated in moments such as Sam and Frodo's descent from Mount Doom, when Sam, a true Bunyanesque `Hopeful', leads the lost and broken Frodo to safety, just as he had borne Frodo and the Ring up to the summit, and found the burden surprisingly light. Sam is not to be reduced to an allegory of the body, for he is much more than that, but the separation of the two at the Grey Havens is emblematic of the sorrow of the separation of the soul and body at death, while their solidarity gives a taste of the ecstatic reunion of soul and body at the Resurrection" (p. 111).
I have never heard the pure love these two hobbits share explained so profoundly. I love what she says about the pain of separation of body and soul and the joy of the reunion that would come. The lovely image that arises is that Sam is the body encasing the soul and the light that shines softly from Frodo is the light of the soul shining from within the body. This surpasses what had been my favorite way of expressing their bond, that they are knitted souls as David and Jonathan were, as Ralph C. Wood in one of my very favorite books points out: "Their mutual regarding is . . . . to the friendship of Jonathan and David: `the soul of Jonathan was knit to the soul of David, and Jonathan loved him as his own soul' (1 Sam. 18:1)" (Gospel According to Tolkien, p. 136). They are actually closer than that, one soul within one body.