Teach him a certain refinement in sorting out and selecting his arguments, with an affection for relevance and so for brevity. Above all let him be taught to throw down his arms and surrender to truth as soon as he perceives it, whether the truth is born at his rival's doing or within himself from some change in his ideas.
Michel de MontaigneIn his commerce with men I mean him to include- and that principally- those who live only in the memory of books. By means of history he will frequent those great souls of former years. If you want it to be so, history can be a waste of time; it can also be, if you want it to be so, a study bearing fruit beyond price.
Michel de Montaigne