All authority belongs to the people.

Difference of opinion is advantageous in religion. The several sects perform the office of a Censor - over each other.

The main objects of all science, the freedom and happiness of man. . . . [are] the sole objects of all legitimate government. A plaque with this quotation, with the first phrase omitted, is in the stairwell of the pedestal of the Statue of Liberty.

Industry, commerce and security are the surest roads to the happiness and prosperity of people.

Perfect happiness, I believe, was never intended by the Deity to be the lot of one of his creatures in this world; but that he has very much put in our power the nearness of our approaches to it is what I have steadfastly believed.

Both of our political parties, at least the honest portion of them, agree conscientiously in the same object: the public good; but they differ essentially in what they deem the means of promoting that good. One side believes it best done by one composition of the governing powers, the other by a different one. One fears most the ignorance of the people; the other the selfishness of rulers independent of them. Which is right, time and experience will prove.

During the late war I had an infallible rule for deciding what Great Britain would do on every occasion. It was, to consider what they ought to do, and to take the reverse of that as what they would assuredly do, and I can say with truth that I was never deceived.