Perhaps the most important and necessary function of philosophy is to lay the rational foundations of common sense. It is necessary, again and again, to travel the same paths and repeat the same age-old arguments in favor of common sense; otherwise, how easily it is dispersed! and how regrettable the consequences of this dispersion! In fact, Edward Feser is right: all the moral ills that modernity suffers from can be traced back to the estrangement from Aristotle, Plato, Aquinas and the other thinkers who, for many centuries, formed the basis of Western thought.