This immensely readable book by Patrick Francois provides an original insight into the increasingly fashionable topic that is social capital. In a unique, original study, the author emphasises trustworthiness as a vital feature of social capital and argues that standard economic treatments of this phenomenon are inadequate. The book's richer evolutionary treatment of this is embedded in a neoclassical model and will prove to be essential reading for economic development scholars as well as those interested in development studies and economic thought in general.