I worry that I may have overstated the impact of Civil War on the utopians. By the time the Civil War comes, most of the communities were quite separated from the wider American society. Their rhetoric is still about transforming the world, but they're not having that much traffic with their neighbors.

Some people just think utopians are idiots who are imagining rivers of candy and not really engaging with the world's ills, and sometimes that's surely the case, but I think that imagining the perfected society is a way of expressing your disgust with the current state of affairs.

There are two instances I studied in which a community moved, amazingly, into an preexisting village built by other, earlier communalists. The Rappites were a German millenarian sect I mostly leave out of the story, even though they are fascinating, because they're focused on salvation and retreating from the world, as opposed to transforming it, like the other groups I write about.

That to me was one of the most exciting, and weird puzzles of this book: how are the most religious people and the least religious people of their time all drawn to very similar visions of utopia?

The Oneida Perfectionists, along with some of the others, believed that feminism, and abolitionism, and other causes that they pursued in their own way without participating with other people outside of their communities, were all piecemeal reforms. That's what makes a utopian a utopian, this idea that they were going to create a whole new world from scratch.

The biggest names in the Transcendentalist literary circle visited the community regularly, and supported it, but they couldn't live there happily. Hawthorne [who was briefly a resident] left for reasons I'm sure make sense to you; he couldn't get enough writing done in a house full of people playing music, and arguing. It was too busy.

Atheist isn't really the right word because they tended to believe in some sort of Enlightenment, capital 'N' Nature kind of god. But these were people who in their times were criticized as infidels.