This ambitious and wide-ranging volume begins the project of rethinking the approach of economics to money. In this new light, concepts such as valuation, price, uncertainty, growth and aggregation are interpreted differently, even as analytical inconsistencies and even intrinsic contradictions between these concepts arise. A central theme of the book is the use of money as a measure and whether the disconnect between money as a form of measurement and money as it is used in the real world can be maintained. This book calls for a radical rethinking of the basis of much of the modern study of economics. It will be of interest to researchers concerned with monetary economics, finance, political economy and economic philosophy.