"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 CHARECTER, giving spiritual and moral training to those who in a few years are themselves to decided the destinies of the nation." ~Theodore Roosevelt

This quote means that the best work that can be done for this country is educating the BODY, the MIND, and CHARECTER. If you have a good mind  and character you will do positive stuff. You will chose the right 24/7. You will help others in need and understand that it is not always about receiving, its about giving too. It takes 1 person to make a chance in this country. That 1 person will them inspire and influence others to do good. It also depends on the people what our nation becomes. The future of our nation mostly depends on the people. It is the people who vote on making decisions. If we all CTR we can have a better nation and make the US a better place to live. For example if you help others like if you volunteer to feeding homeless you are making a difference and you are helping others.