[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.

[John Adams' writings] had indicted the United States for slavishly copying the English constitution by erecting bicameral legislatures in their state constitutions, most drafted in 1776.

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] developed a much deeper suspicion of France and the other European powers than he had earlier. He lost much if not all of the utopian thinking about international politics and diplomacy expressed in his Model Treaty of 1776 and became much more cynical about the world.

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

Deeply versed in history, [John Adams] said over and over that America had no special providence, no special role in history, that Americans were no different from other peoples, that the United States was just as susceptible to viciousness and corruption as any other nation. In this regard, at least, Jefferson's vision has clearly won the day.

[John] Adams was arguing that a separate social order existed that needed to be embodied in senates and his fellow Americans could not accept this and accused him rightly of being obsessed with the English constitution.