It was [John's Adams] Massachusetts constitution if anything that influenced people.

[John's Adams] description of [Benjamin] Franklin in a letter to [his wife] Abigail in 1775 is laudatory. Only when he experiences all the adulation paid to Franklin in Paris does he begin to change his tune.

[Tomas] Jefferson believed that the United States was a chosen nation with a special responsibility to spread democracy around the world.

[John Adams] is impressed with [Tomas] Jefferson's learning, but noted his silence during the debates in the Congress: "I never heard him utter three Sentences together."

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.

I think [John Adams's] influence on the federal Constitution was indirect. Many including James Madison mocked the first volume of Adams's Defence of the Constitutions of the United States in 1787. But his Massachusetts constitution was a model for those who thought about stable popular governments, with its separation of powers, its bicameral legislature, its independent judiciary, and its strong executive.

[John Adams] always felt that his contribution to bringing about independence went unappreciated, especially after the 1790s when [Tomas] Jefferson began to be lauded as the "author" of the Declaration of Independence.