This final volume of ‘The Selected Works of Gordon Tullock’ series, presents an eclectic mix of essays by Gordon Tullock. The first three sections highlight his pioneering application of rational choice theory to fields outside the usual purview of economics, including criminal behaviour, sociobiology, and behaviour in non-human societies. The final four sections, all concerned with more traditional areas of economics, still show Tullock at his innovative best, challenging conventional thinking in such fields as public finance and monetary economics.