This text is an essay in the retrieval of a lost outlook. The complex of political thought, beliefs about the contemporary world and the perception of history that sustained the Scottish Jacobite community has long remained obscure. In consequence, we know little of the nature and motivation of a subversive community whose influence on the development of state and society in Scotland and the British Isles in the 18th century was immense. Daniel Szechi rectifies this anomaly by an in-depth analysis of the attitudes, beliefs and assumptions - the mentalite - of one of the most active Jacobites of the early 18th century: George Lockhart of Carnwath.