THE DECLARATION OF INDEPENDENCE
In Congress, July 4, 1776
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, ...
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America. 
THE DECLARATION OF INDEPENDENCE
"A primary object…should be the education of our youth in the science of government. In a republic, what species of knowledge can be equally important? And what duty more pressing…than…communicating it to those who are to be the future guardians of the liberties of the country?" - George Washington
The Founding Fathers info home page. Includes lots of history and links for people who are interesting the heroic founding of the American republic.
The Federalist Papers remain today as an excellent reference for anyone who wants to understand the U.S. Constitution. 