On July 4, 1776, the United States officially declared its independence from the British Empire when the Second Continental Congress adopted the Declaration of Independence. The Declaration was authored by a “Committee of Five”—John Adams, Benjamin Franklin, Thomas Jefferson, Robert Livingston, and Roger Sherman—with Jefferson as the main drafter. But writing to Henry Lee in 1825, Jefferson himself admitted that the Declaration wasn’t meant to be original. Instead, it “was intended to be an expression of the American mind, resting on the harmonising sentiments of the day,” as expressed in conversations, letters, and (what he called) “elementary books” of philosophy, including Aristotle, Cicero, John Locke, and Algernon Sidney. In short, the Declaration of Independence brings together the core principles at the heart of the American Revolution, including natural rights, popular sovereignty, and the rule of law.
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.