Originally published over two decades ago, this classic text within the philosophy of economics is a tour de force against revealed preference. It critically examines the research programme carried out by the Nobel Prize winner Paul Samuelson on the revealed preference approach to the theory of consumer behaviour. It also challenges two essential premises: * that the programme has been completed * that the various contributions of Samuelson are mutually consistent. This text contains a new preface by Wong, in which he provides a detailed insight into the origins of his pioneering text, and a new introduction from Philip Mirowski, analyzing the impact The Foundation of Paul Samuelson's Revealed Preference Theory has had on the discipline of economics as well as explaining why it remains core reading for economists today. The defining statement of economic method, this book will be of interest to economists everywhere.