The Preamble of the Declaration of Independence:

When in the Course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
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, — That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn that mankind are more disposed to suffer, while evils are sufferable than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.

So what does it say? Three points summarize it.

1. All human beings have specific, absolute, and unchangeable rights. (These include those later outlined in the Bill of Rights)
2. Government is formed for the sole purpose of protecting these individual rights.
3. Government which either fails to protect these rights, or attacks them, becomes illegitimate and should be changed or overthrown.

My purpose, with non-partisan music and writing, is to celebrate America's founding principles and the men and women who defend them. I believe the most important duty of each and every United States citizen is to know at least the basic principles in the Declaration of independence and our Constitution (which, of course, includes the Bill of Rights) and to do everything in one's power to defend them and keep the spirit of liberty alive. These timeless notions are just as revolutionary today as they were when they were written. Though they have, and will always be under attack by those who think they know what’s best for us, we will continue to flourish to the degree that we know, and are willing to defend these principles. May God bless United States of America.