The book seeks to examine Trust as a culture-dependant concept, offers a definintion for it, places it within a general framework of the pair of the Overt and the Hidden, and characterises it within Arabic-speaking Islamic culture. The book reviews the expressions of trust in a variety of fields in Arabic-speaking Islamic cultures, distills from them their common principles, compares them to their counterparts in Western cultures, chiefly American, and makes suggestions for making decision about it.