''Of all the work that is done or that can be done for our country, the greatest is that of educating the body, the mind, and above all the character, giving spiritual and moral training to those who in a few years are themselves to decide the destinies of the nation'' - Theodore Roosevelt

What i think this quote means is that of everything that we can do for evrything the best thing we can do is  help our mind body and spirit learn something evryday.