“It should be your care, therefore, and mine, to elevate the minds of our children and exalt their courage; to accelerate and animate their industry and activity; to excite in them an habitual contempt of meanness, abhorrence of injustice and inhumanity, and an ambition to excel in every capacity, faculty, and virtue. If we suffer their minds to grovel and creep in infancy, they will grovel all their lives.”

“It is not in the still calm of life, or the repose of a pacific station, that great characters are formed. The habits of a vigorous mind are formed in contending with difficulties. Great necessities call out great virtues. When a mind is raised, and animated by scenes that engage the heart, then those qualities which would otherwise lay dormant, wake into life and form the character of the hero and the statesman.”

“I have accepted a seat in the House of Representatives, and thereby have consented to my own ruin, to your ruin, and to the ruin of our children. I give you this warning that you may prepare your mind for your fate.”

“...The Presidential election has given me less anxiety than I myself could have imagined. The next administration will be a troublesome one, to whomsoever it falls, and our John has been too much worn to contend much longer with conflicting factions. I call him our John, because, when you were at the Cul de sac at Paris, he appeared to me to be almost as much your boy as mine....As to the decision of your author, though I wish to see the book {Flourens’s Experiments on the functions of the nervous system in vertebrated animals}, I look upon it as a mere game at push-pin. Incision-knives will never discover the distinction between matter and spirit, or whether there is any or not. That there is an active principle of power in the universe, is apparent; but in what substance that active principle resides, is past our investigation. The faculties of our understanding are not adequate to penetrate the universe. Let us do our duty, which is to do as we would be done by; and that, one would think, could not be difficult, if we honestly aim at it.Your university is a noble employment in your old age, and your ardor for its success does you honor; but I do not approve of your sending to Europe for tutors and professors. I do believe there are sufficient scholars in America, to fill your professorships and tutorships with more active ingenuity and independent minds than you can bring from Europe. The Europeans are all deeply tainted with prejudices, both ecclesiastical and temporal, which they can never get rid of. They are all infected with episcopal and presbyterian creeds, and confessions of faith. They all believe that great Principle which has produced this boundless universe, Newton’s universe and Herschel’s universe, came down to this little ball, to be spit upon by Jews. And until this awful blasphemy is got rid of, there never will be any liberal science in the world.I salute your fireside with best wishes and best affections for their health, wealth and prosperity.{Letter to Thomas Jefferson, 22 January, 1825}”

“We think ourselves possessed, or, at least, we boast that we are so, of liberty of conscience on all subjects, and of the right of free inquiry and private judgment in all cases, and yet how far are we from these exalted privileges in fact!”

“You go on, I presume, with your latin Exercises: and I wish to hear of your beginning upon Sallust who is one of the most polished and perfect of the Roman Historians, every Period of whom, and I had almost said every Syllable and every Letter is worth Studying.In Company with Sallust, Cicero, Tacitus and Livy, you will learn Wisdom and Virtue. You will see them represented, with all the Charms which Language and Imagination can exhibit, and Vice and Folly painted in all their Deformity and Horror.You will ever remember that all the End of study is to make you a good Man and a useful Citizen.—This will ever be the Sum total of the Advice of your affectionate Father,John Adams”

“Old minds are like old horses; you must exercise them if you wish to keep them in working order.”