They [Raskolnikov and Sonia] were renewed by love; the heart of each held infinite sources of life for the heart of the other. (Epilogue, 2.23)
Wow. Isn't that a contrast to the rest of the novel? This is what we all want. In some ways love between Raskolnikov and Sonia seems impossible, even though their attraction is undeniable. This ending makes love seem possible for almost anybody.