[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.

[Benjamin] Franklin may be a great philosopher, [John Adams] told his diary in 1779, but "as a Legislator in America he has done very little."

By 1782 [John Adams] had come to feel for [Benjamin] Franklin "no other sentiments than Contempt or Abhorrence."

More than any other figure in our history [Tomas] Jefferson is responsible for the idea of American exceptionalism.

[John] Adams said his objective in writing his Defence of the Constitutions of the United States and his Davila essays was to counter what he thought was the unfair criticism of the American state constitutions made by the French philosophers, especially [Anne Robert Jacques] Turgot.

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.

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