It is a complaint without foundation that "to very few people is granted the faculty of comprehending what is imparted to them, and that most, through dullness of understanding, lose their labor and their time." On the contrary, you will find the greater number of men both ready in conceiving and quick in learning, since such quickness is natural to man. As birds are born to fly, horses to run, and wild beasts to show fierceness, so to us peculiarly belong activity and sagacity of understanding.