What are the motifs in The Cider House Rules by John Irving?

Friendships and relationships are recurring ideas that occur throughout the novel. The relationships that exist between the orphans are important. Homer seems to have a demeanor allowing him to get along with everyone, from the nurses and the doctor at the orphanage to everyone that works on the apple orchard. Homer also forms close relationships with certain characters and trusts some people more than others, such as Wally and Candy. Even Dr. Larch struggles with his relationships with Homer, the nurses, and the other orphans at St. Cloud's.