    Montaigne begins his project to know man by noticing that the same human behavior can have opposite effects, or that even opposite conducts can have the same effects: “by diverse means we arrive at the same  end”.[21]  Human life cannot be turned into an object of rational theory. Human conduct does not obey universal rules, but a great diversity of rules, among which the most accurate still fall short of the intended mark. “Human reason is a tincture infused in about equal strength in all our opinions and ways, whatever their form: infinite in substance, infinite in  diversity”[22]  says the chapter on custom. By focusing on anecdotal experience, Montaigne comes thus to write “the masterpiece of modern moral science”, according to the great commentator Hugo Friedrich.  He gives up the moral ambition of telling how men should live, in order to arrive at a non-prejudiced mind for knowing man as he is. “Others form man, I tell of  him”.[23]  Man is ever since “without a definition”, as philosopher Marcel Conche  commented.[24]  In the chapter “Apologie de Raimond Sebond”, Montaigne draws from classical and Renaissance knowledge in order to remind us that, in some parts of the world, we find men that bear little resemblance to us. Our experience of man and things should not be perceived as limited by our present standards of judgment. It is  a sort of madness when we settle limits for the possible and the  impossible.[25] 