Gérard Debreu

“I had become interested in economics, an interest that was transformed into a lifetime dedication when I met with the mathematical theory of general economic equilibrium.”

“Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or {{w|welfare economics}}.”

“L. Walras first formulated the state of the economic system at any point of time as the solution of a system of simultaneous equations representing the demand for goods by consumers, the supply of goods by producers and the equilibrium condition that supply equal demand on every market.”