“No experiment can be more interesting than that we are now trying, and which we trust will end in establishing the fact, that man may be governed by reason and truth. Our first object should therefore be, to leave open to him all the avenues to truth. The most effectual hitherto found, is the freedom of the press. It is, therefore, the first shut up by those who fear the investigation of their actions.”

“A private central bank issuing the public currency is a greater menace to the liberties of the people than a standing army. We must not let our rulers load us with perpetual debt.”

“Laws provide against injury from others; but not from ourselves.”

“It takes time to persuade men to do even what is for their own good.”

“We will be soldiers, so our sons may be farmers, so their sons may be artists”

“All life is an experiment. The more experiments you make the better.”

“The Good Spirit never cared for the colleges, and though all men and boys were now drilled in Greek, Latin, and Mathematics, it had quite left these shells high on the beach, and was creating and feeding other matters [science] at other ends of the world.”

“Nature is a rag-merchant, who works up every shred and ort and end into new creations; like a good chemist, whom I found, the other day, in his laboratory, converting his old shirts into pure white sugar.”

“What, no more ceremony? See, my women! Against the blown rose may they stop their nose That kneel'd unto the buds.”

“Much rain wears the marble.”

“When great leaves fall, the winter is at hand.”

“The machine unmakes the man. Now that the machine is so perfect, the engineer is nobody.”

“Railroad iron is a magician's rod, in its power to evoke the sleeping energies of land and water.”

“Man moves in all modes, by legs of horses, by wings of winds, by steam, by gas of balloon, by electricity, and stands on tiptoe threatening to hunt the eagle in his own element.”