John Adams, letter to Abigail Adams, July 3, 1776:
I am well aware of the toil, and blood, and treasure, that it will cost us to maintain this declaration, and support and defend these states. Yet, through all the gloom, I can see the rays of light and glory; I can see that the end is more than worth all the means, and that posterity will triumph.
John Hancock (attributed), upon signing the Declaration of Independence, July 4, 1776:
There! His Majesty can now read my name without glasses. And he can double the reward on my head!
Benjamin Franklin (attributed), at the signing of the Declaration of Independence, July 4, 1776:
We must all hang together, or assuredly we shall all hang separately.
Thomas Jefferson, letter to John Adams, September 12, 1821:
The flames kindled on the 4th of July 1776, have spread over too much of the globe to be extinguished by the feeble engines of despotism; on the contrary, they will consume these engines and all who work them.
Thomas Jefferson, letter to Henry Lee, May 8, 1825:
With respect to our rights, and the acts of the British government contravening those rights, there was but one opinion on this side of the water. All American whigs thought alike on these subjects. When forced, therefore, to resort to arms for redress, an appeal to the tribunal of the world was deemed proper for our justification. This was the object of the Declaration of Independence. Not to find out new principles, or new arguments, never before thought of, not merely to say things which had never been said before; but to place before mankind the common sense of the subject, in terms so plain and firm as to command their assent, and to justify ourselves in the independent stand we are compelled to take. Neither aiming at originality of principle or sentiment, nor yet copied from any particular and previous writing, it was intended to be an expression of the American mind, and to give to that expression the proper tone and spirit called for by the occasion. All its authority rests then on the harmonizing sentiments of the day, whether expressed in conversation, in letters, printed essays, or in the elementary books of public right, as Aristotle, Cicero, Locke, Sidney, &c.
John Adams, toast for the 50th Anniversary of the Declaration of Independence, July 4, 1826:
Frederick Douglass, “What to the Slave is the Fourth of July?” July 5, 1852:
I have said that the Declaration of Independence is the ring-bolt to the chain of your nation’s destiny; so, indeed, I regard it. The principles contained in that instrument are saving principles. Stand by those principles, be true to them on all occasions, in all places, against all foes, and at whatever cost.
Abraham Lincoln, speech on the Dred Scott Decision, June 26, 1857:
The assertion that “all men are created equal” was of no practical use in effecting our separation from Great Britain; and it was placed in the Declaration, not for that, but for future use. Its authors meant it to be, thank God, it is now proving itself, a stumbling block to those who in after times might seek to turn a free people back into the hateful paths of despotism. They knew the proneness of prosperity to breed tyrants, and they meant when such should re-appear in this fair land and commence their vocation they should find left for them at least one hard nut to crack.
Abraham Lincoln, speech at Chicago, Illinois, July 10, 1858:
We have besides these men–descended by blood from our ancestors–among us perhaps half our people who are not descendants at all of these men, they are men who have come from Europe–German, Irish, French and Scandinavian–men that have come from Europe themselves, or whose ancestors have come hither and settled here, finding themselves our equals in all things. If they look back through this history to trace their connection with those days by blood, they find they have none, they cannot carry themselves back into that glorious epoch and make themselves feel that they are part of us, but when they look through that old Declaration of Independence they find that those old men say that “We hold these truths to be self-evident, that all men are created equal,” and then they feel that that moral sentiment taught in that day evidences their relation to those men, that it is the father of all moral principle in them, and that they have a right to claim it as though they were blood of the blood, and flesh of the flesh of the men who wrote that Declaration, and so they are. That is the electric cord in that Declaration that links the hearts of patriotic and liberty-loving men together, that will link those patriotic hearts as long as the love of freedom exists in the minds of men throughout the world.
Calvin Coolidge, speech on the 150th Anniversary of the Declaration of Independence, July 5, 1926:
We live in an age of science and of abounding accumulation of material things. These did not create our Declaration. Our Declaration created them. The things of the spirit come first. Unless we cling to that, all our material prosperity, overwhelming though it may appear, will turn to a barren sceptre in our grasp. If we are to maintain the great heritage which has been bequeathed to us, we must be like-minded as the fathers who created it. We must not sink into a pagan materialism. We must cultivate the reverence which they had for the things that are holy. We must follow the spiritual and moral leadership which they showed. We must keep replenished, that they may glow with a more compelling flame, the altar fires before which they worshiped.
John F. Kennedy, address at Independence Hall, July 4, 1962:
Today, 186 years later, that Declaration whose yellowing parchment and fading, almost illegible lines I saw in the past week in the National Archives in Washington is still a revolutionary document. To read it today is to hear a trumpet call. For that Declaration unleashed not merely a revolution against the British, but a revolution in human affairs. . . . The theory of independence is as old as man himself, and it was not invented in this hall. But it was in this hall that the theory became a practice; that the word went out to all, in Thomas Jefferson’s phrase, that “the God who gave us life, gave us liberty at the same time.” And today this Nation–conceived in revolution, nurtured in liberty, maturing in independence–has no intention of abdicating its leadership in that worldwide movement for independence to any nation or society committed to systematic human oppression.
Martin Luther King, “I Have A Dream,” August 28, 1963:
When the architects of our republic wrote the magnificent words of the Constitution and the Declaration of Independence, they were signing a promissory note to which every American was to fall heir. This note was a promise that all men would be guaranteed the inalienable rights of life, liberty, and the pursuit of happiness. . . . I have a dream that one day this nation will rise up and live out the true meaning of its creed: “We hold these truths to be self-evident: that all men are created equal.”
Ronald Reagan, address at Yorktown, October 19, 1981:
Our Declaration of Independence has been copied by emerging nations around the globe, its themes adopted in places many of us have never heard of. Here is this land, for the first time, it was decided that man is born with certain God-given rights. We the people declared that government is created by the people for their own convenience. Government has no power except those voluntarily granted it by the people. There have been revolutions before and since ours, revolutions that simply exchanged one set of rulers for another. Ours was a philosophical revolution that changed the very concept of government.