“Nothing can illustrate these observations more forcibly, than a recollection of the happy conjuncture of times and circumstances, under which our Republic assumed its rank among the Nations; The foundation of our Empire was not laid in the gloomy age of Ignorance and Superstition, but at an Epoch when the rights of mankind were better understood and more clearly defined, than at any former period, the researches of the human mind, after social happiness, have been carried to a great extent, the Treasures of knowledge, acquired by the labours of Philosophers, Sages and Legislatures, through a long succession of years, are laid open for our use, and their collected wisdom may be happily applied in the Establishment of our forms of Government; the free cultivation of Letters, the unbounded extension of Commerce, the progressive refinement of Manners, the growing liberality of sentiment... have had a meliorating influence on mankind and increased the blessings of Society. At this auspicious period, the United States came into existence as a Nation, and if their Citizens should not be completely free and happy, the fault will be entirely their own.[Circular to the States, 8 June 1783 - Writings 26:484--89]”

“The United States of America was once a great nation... but this United States is not the one our founding fathers set out to build over 200 years ago. This United States stands for everything its citizens have fought against throughout its history: oppression, unwarranted violence against innocent and weaker countries or its own citizens, trampling of human rights, crooked legal systems, and socialism.”

“May it [American independence] be to the world, what I believe it will be, (to some parts sooner, to others later, but finally to all,) the signal of arousing men to burst the chains under which monkish ignorance and superstition had persuaded them to bind themselves, and to assume the blessings and security of self-government. That form which we have substituted, restores the free right to the unbounded exercise of reason and freedom of opinion. All eyes are opened, or opening, to the rights of man. The general spread of the light of science has already laid open to every view the palpable truth, that the mass of mankind has not been born with saddles on their backs, nor a favored few booted and spurred, ready to ride them legitimately... These are grounds of hope for others. For ourselves, let the annual return of this day forever refresh our recollections of these rights, and an undiminished devotion to them.[Letter to Roger C. Weightman on the anniversary of the signing of the Declaration of Independence in 1776, 24 June 1826. This was Jefferson's last letter]”

“A State can be no better than the citizens of which it is composed. Our labour now is not to mould States but make citizens.”

“The President is at liberty, both in law and conscience, to be as big a man as he can. His capacity will set the limit; and if Congress be overborne by him, it will be no fault of the makers of the Constitution, – it will be from no lack of constitutional powers on its part, but only because the President has the nation behind him, and the Congress has not.” “The chief instrumentality by which the law of the Constitution has been extended to cover the facts of national development has of course been judicial interpretation, – the decisions of the courts. The process of formal amendment of the Constitution was made so difficult by provisions of the Constitution itself that it has seldom been feasible to use it; and the difficulty of formal amendment has undoubtedly made the courts more liberal, not to say lax, in their interpretation than they would otherwise have been. The whole business of adaptation has been theirs, and they have undertaken it with open minds, sometimes even with boldness and a touch of audacity...”“The old theory of the sovereignty of the States, which used so to engage our passions, has lost its vitality. The war between the States established at least this principle, that the federal government is, through its courts, the final judge of its own powers... We are impatient of state legislatures because they seem to us less representative of the thoughtful opinion of the country than Congress is. We know that our legislatures do not think alike, but we are not sure that our people do not think alike...”

“I wish that all nations may recover and retain their independence; that those which are overgrown may not advance beyond safe measures of power, that a salutary balance may be ever maintained among nations, and that our peace, commerce, and friendship, may be sought and cultivated by all. It is our business to manufacture for ourselves whatever we can, to keep our markets open for what we can spare or want; and the less we have to do with the amities or enmities of Europe, the better. Not in our day, but at no distant one, we may shake a rod over the heads of all, which may make the stoutest of them tremble. But I hope our wisdom will grow with our power, and teach us, that the less we use our power, the greater it will be.”