Kenneth Arrow Quote

Trust is an important lubricant of a social system. It is extremely efficient; it saves a lot of trouble to have a fair degree of reliance on other people's word. Unfortunately this is not a commodity which can be bought very easily. If you have to buy it, you already have some doubts about what you have bought.

Chapter 1, Rationality: Individual And Social, p. 23 - The Limits Of Organization (1974)