ABSTRACT
Pareto’s methodology is a classical vexata questio of his thought. The Manual is also a methodological treatise, where Pareto explains his philosophy of economics and social science. The two ‘strange’ first chapters of the book have, in fact, no sense unless we consider the Manual as also a place where Pareto wanted to fix his basic methodology of science. Thus, my way of celebrating the centenary of the Manual is to take seriously its methodological message.
