Matt Ridley

3. « After all I did for him, how could he do that to me ? If you do this for me, I promise I'll make it up later. What did I do to deserve that ? You owe it to me. Obligation ; dept ; favour ; bargain ; contract ; exchange ; deal... Our language and our lives are permeated with ideas of reciprocity. In no sphere is this more true than in our attitude to food. » (p. 84)