It hurts to love someone and not be loved in return, but what is the most painful is to love someone and never find the courage to let the person know how you feel.

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.

The truly gifted negotiator, then, is one whose initial position is exaggerated enough to allow for a series of concessions that will yield a desirable final offer from the opponent, yet is not so outlandish as to be seen as illegitimate from the start.

To love someone is nothing, to be loved by someone is something, but to be loved by the one you love is everything

We must see the precise, accurate implementation of agreements signed on the basis of reciprocity.

With the Palestinians, I think we have started to move closer, also on the issue of reciprocity,