The second foundation is fairness reciprocity.

This was the cooperation and reciprocity part.

Why would that be? Well, that probably has to do with reciprocity.

One is reciprocity, and associated with it is a sense of justice and a sense of fairness.

You can teach them in the laboratory to do a little bit of exchange and indeed there's reciprocity in other animals

And there are a number of possibilities, such as increasing circles of reciprocity in the sense that Robert Wright argues for.

There's actually ambiguous evidence as to whether you find reciprocity in other animals, but the evidence for people could not be clearer.

And if you apprehend treachery from a nation, then throw back their treaty towards them in reciprocity indeed Allah does not like the treacherous.

Now, in this paradox between love and desire, what seems to be so puzzling is that the very ingredients that nurture love mutuality, reciprocity, protection, worry, responsibility for the other are sometimes the very ingredients that stifle desire.

I think morality is much more than what I've been talking about, but it would be impossible without these ingredients that we find in other primates, which are empathy and consolation, pro social tendencies and reciprocity and a sense of fairness.

what's mine is thine, what's thine is mine, the kind of mindset that operates within a family, for example dominance, whose principle is don't mess with me reciprocity, you scratch my back, I'll scratch yours and sexuality, in the immortal words of Cole Porter, Let's do it.

Man has to go through a change to realize that his life should be lived for the unity of mankind, in that we're all like one man in one heart, and we're sharing that desire, sharing that thought, where our mutual connection, making mutual concessions, and reciprocity like cells of a living body.