Banished from the Massachusetts Bay Colony for his refusal to conform to Puritan religious and social standards, Roger Williams established a haven in Rhode Island for those persecuted in the name of the religious establishment. He conducted a lifelong debate over religious freedom with distinguished figures of the seventeenth century, including Puritan minister John Cotton, Massachusetts governor John Endicott, and the English Parliament.

James Calvin Davis gathers together important selections from Williams's public and private writings on religious liberty, illustrating how this...