“Longing is not always a reciprocal thing.”

“People fall in love all the time. And it's not always with the right people. And it's not always reciprocated.”

“Perhaps the most legitimately dispiriting thing about reciprocal altruism is that it is a misnomer. Whereas with kin selection the "goal" of our genes is to actually help another organism, with reciprocal altruism the goal is that the organism be left under the impression that we've helped; the impression alone is enough to bring the reciprocation.”

“Now that's the sort of love Richard had always been looking for, enduring, defying obstacles, reciprocated.”

“It is just as important to give all of what you are, than all of what you have. Nevertheless, it is always reciprocated.”

“She'd been in love with the man, and love is a scary thing. If not reciprocated, it can turn a person into a monster.”