“I shall never shine 'til some animating occasion calls forth all my powers.”

“...I say, that Power must never be trusted without a check.”

“Admire and adore the Author of the telescopic universe, love and esteem the work, do all in your power to lessen ill, and increase good, but never assume to comprehend.”

“I never saw the face of Cobbett...I should not know him if I met him in my porridge dish.”

“...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}”

“Even mighty states and kingdoms are not exempted. If we look into history, we shall find some nations rising from contemptible beginnings and spreading their influence, until the whole globe is subjected to their ways. When they have reached the summit of grandeur, some minute and unsuspected cause commonly affects their ruin, and the empire of the world is transferred to some other place. Immortal Rome was at first but an insignificant village, inhabited only by a few abandoned ruffians, but by degrees it rose to a stupendous height, and excelled in arts and arms all the nations that preceded it. But the demolition of Carthage (what one should think should have established is in supreme dominion) by removing all danger, suffered it to sink into debauchery, and made it at length an easy prey to Barbarians.England immediately upon this began to increase (the particular and minute cause of which I am not historian enough to trace) in power and magnificence, and is now the greatest nation upon the globe.Soon after the reformation a few people came over into the new world for conscience sake. Perhaps this (apparently) trivial incident may transfer the great seat of empire into America. It looks likely to me. For if we can remove the turbulent Gallics, our people according to exactest computations, will in another century, become more numerous than England itself. Should this be the case, since we have (I may say) all the naval stores of the nation in our hands, it will be easy to obtain the mastery of the seas, and then the united force of all Europe will not be able to subdue us. The only way to keep us from setting up for ourselves is to disunite us. Divide et impera. Keep us in distinct colonies, and then, some great men from each colony, desiring the monarchy of the whole, they will destroy each others' influence and keep the country in equilibrio.Be not surprised that I am turned into politician. The whole town is immersed in politics.”

“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.”