From the conclusion:
As this book has shown, American Congregationalists have used their past in many different ways over the last two centuries: The Pilgrim story has been a source of unity, a reason for debate, and an occasion for moral instruction and corporate pride. It has inspired serious thought and study, and it has created a yearning for common rituals and greater organizational sophistication. History has served as entertainment and reason for travel, the subject of imaginative plays and tableaux and pageants. To be sure, Congregationalists regularly misinterpreted and often trivialized their Pilgrim ancestors or at times used them to belittle their Baptist, Presbyterian, and Unitarian cousins. More important in the long run, however, is what history helped Congregationalists to avoid. At key points, as we have seen, it allowed them to stand aside from the competition to be the most "biblical" of all Protestants; it directed their passions toward tolerance and larger Christian unity rather than maintaining the purity of their theological system. These choices brought their own set of problems, of course, and in the end contributed to the denomination's ongoing debate about its core identity. But all told, the Congregationalists' story suggests that twentieth-century Protestant liberalism is much more than a one-dimensional tale of religious indifference or feckless decision making--though those elements are certainly present, as, of course, they are for everyone. It is also, in the end, about paths not taken. It is about people who learned to live with ambiguities, who chose to believe without demanding certainties.