Economist Quotes and aphorisms about agreement Ildefonso Guajardo Villarreal Ildefonso Guajardo Villarreal Ildefonso Guajardo Villarreal Robert Mundell Ildefonso Guajardo Villarreal Ildefonso Guajardo Villarreal Ildefonso Guajardo Villarreal Ildefonso Guajardo Villarreal John Kenneth Galbraith