For Doria and Genovesi trust is the basis of the well-ordered republic. It is, in short, the motive for a man to behave towards members of the society at large in much the same way he behaves towards members of his own kin group; or, at least, it provides strong reasons why he should not ~— except in purely private concerns — privilege that group over any other.

Diego Gambetta, Trust - Making and Breaking…, loc. 1860