If history teaches anything, it teaches humility.

[John] Adams identified himself with the political theories of [James] Harrington, [John] Locke, and [Charles-Louis] Montesquieu, whose ideas of constitutionalism, he believed, were applicable to all peoples everywhere; they were his contribution to what he called "the divine science of politics."

A mutual friend, Benjamin Rush, brought [Tomas Jefferson and John Adams] together in 1812, and they went on to exchange letters for the rest of their lives. But in their correspondence they tended to avoid the most controversial issues, such as slavery.

Perhaps more significant than his experience in Europe, though, was [John] Adams's experience in his own country, and his extensive reading on the history of the English constitution. In 1779, he had an opportunity to try out his ideas by framing the Massachusetts constitution.

[John] Adams never had an optimistic view of human nature, and his experience in the Congress and abroad only deepened his suspicion that his fellow Americans might not have the character to sustain a republican government.

Again and again [Tomas] Jefferson deftly sidesteps many of [John] Adams's often provocative remarks. They both felt the correspondence, which was written for posterity, was too important to risk by being too candid with one another.

[ Massachusetts constitution] was [John Adams] attempt to justify that structure by the traditional notion of social estates - that the executive represented the monarchical estate, the senate the aristocratic estate, and the house of representatives the estate of the people.