Vilfredo Pareto and the birth of modern microeconomics There has been a recent resurgence of interest in the work of Vilfredo Pareto one of the founders of modern economics. This book reconstructs the genesis and significance of Paretos theory of choice which is Paretos greatest contribution to economic science and which was used by John Hicks amongst others to develop microeconomics 1. The intellectual evolution of a non economist : 1890 1900 2. Pareto and Vailati : a forgotten exchange on choice and action 3. The methodological dispute between Pareto and Croce 4. Guidelines for Paretian methodology 5. More wars than peace : Pareto and English economists 6. A Unitarian reading of Paretos paradoxes in the theory of choice and of its (mis)interpretations.