Those powers of reasoning and understanding in man, therefore, being handled in a workmanlike fashion and applied to their best uses by such devices and means as are thought fittest, direct the natural appetites so as to secure the health of the parts appointed for them, and of the whole body, which is compounded of those parts. They develop the senses and their organs to their best perfection and longest endurance. They restrain desire to the rule of reason and the advice of foresight. They enrich the mind and the soul itself by laying up in the treasury of remembrance all arts and imaginations, all knowledge, wisdom, and understanding, by which either God is to be honoured or the world is to be honestly and faithfully served; and this heavenly benefit is begun by education, and confirmed and perfected by continuous exercise, which crowns the whole work. Education of Girls. In naming the persons who were to receive the benefit of education I did not exclude young maidens, and, therefore, seeing I made them one branch of my division, I must now say something more about them. Some may think that the matter might well enough have been passed over in silence, as not belonging to my purpose, seeing that my professional concern is with the education of boys. But seeing that I begin as low as the first elementary training, in which young maidens ordinarily share, how could I seem to take no notice of them? And to prove that they ought to receive education I find four special reasons, any one of which--therefore surely all together--may persuade their greatest adversary, much more then myself, who am for them tooth and nail. The first is the custom of the country, which allows them to learn. The second is the duty we owe to them, charging us in conscience not to leave them deficient. The third is their own aptness to learn, which God would never have bestowed on them to remain idle or to be used to small purpose. The fourth is the excellent results shown in them when they have had the advantage of good upbringing.