Donald McCloskey's previous books, The Rhetoric of Economics and If You're So Smart, aimed to bring economics back into the wider conversation of the day. In Knowledge and Persuasion in Economics he carries the conversation further, into the seminars of philosophers. His message is that economics is a science, but a human science. It is properly mathematical, but literary too. His book is highly unusual: a work of technical economics that can be read by anyone, a witty guide to the ins and outs of economic philosophy expressed in plain English.