What are the motifs in The Puritan Dilemma; the Story of John Winthrop by Edmund Sears Morgan?

Democracy and corruption are reoccurring ideas in the book. The Puritans were able to escape to New England and rule themselves largely autonomously through a legal loophole. The charter of the Massachusetts Bay Company specified that they must hold yearly meetings but it did not specify where the meetings had to be held, through an oversight. For this reason, the "freemen," or members of the company, suggested to Winthrop and the other potential colonists that they hold their first meeting in New England so that the King would have little oversight over their decision-making.