Presenting legal and philosophical essays on money, this book explores the conditions according to which an object like a piece of paper, or an electronic signal, has come to be seen as having a value. Money plays a crucial role in the regulation of social relationships and their normative determination. It is thus integral to the very nature of the “social”, and the question of how society is kept together by a network of agreements, conventions, exchanges, and codes. All of which must be traced down. The technologies of money discussed here by Searle, Ferraris, and Condello show how we conceive the category of the social at the intersection of individual and collective intentionality, documentality, and materiality. All of these dimensions, as the introduction to this volume demonstrates, are of vital importance for legal theory and for a whole set of legal concepts that are crucial in reflections on the relationship between law, philosophy, and society.