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

This rationale, which justified the mixed constitution of Great Britain, might have made some sense in 1776, but by 1787 most American thinkers had come to believe that all parts of their balanced governments represented in one way or another the sovereign people. They had left the Aristotelian idea of mixed estates - monarchy, aristocracy, and democracy - way behind. [John] Adams had not, and his stubbornness on this point caused him no end of trouble.

By the time [John Adams] came to write his Defence of the Constitutions of the United States in 1787 he had as dark a view of the American character as that of any critic in our history.

[John] Adams's perception of Europe, and especially France, was clearly different than [Tomas] Jefferson's. For Jefferson, the luxury and sophistication of Europe only made American simplicity and virtue appear dearer. For Adams, by contrast, Europe represented what America was fast becoming - a society consumed by luxury and vice and fundamentally riven by a struggle between rich and poor, gentlemen and commoners.

[John] Adams's letters to [his wife] Abigail are wonderful. In his letters, he is loving, humorous, preachy, learned, and saucy. He speaks to her with almost complete abandon, revealing all of his sensuous and vulnerable nature.

I think [John] Adams was correct when he said that his May resolutions were "an Epocha, a decisive Event," and tantamount to a declaration of independence.

[John Adams's] vividly descriptive prose is supremely quotable. Adams wears his heart on his sleeve and reveals all of his ambitions, doubts, and insecurities, especially in his diary, which is one of the greatest and most readable in all of American literature.