Theodore Parker was a preacher, lecturer, and writer, a public intellectual, and a religious and social reformer. He played a major role in moving Unitarianism away from being a Bible-based faith, and he established a precedent for clerical activism that has inspired generations of liberal religious leaders. Although ranked with William Ellery Channing as the most important and influential Unitarian minister of the nineteenth century, he was an extremely controversial figure (he was active in the antislavery movement) in his own day and his legacy to Unitarian Universalism remains contested. The contents include: Some Thoughts on the Progress of America and the Influence of her Diverse Institutions; The New Crime against Humanity; A Sermon of the Dangers which Threaten the Rights of Man in America; An Address delivered before the New York City Anti-Slavery Society; A Sermon on the Consequences of an Immoral Principle and False Idea of Life; The Great Battle between Slavery and Freedom: Speech I and II; and The Present Aspect of Slavery in America and immediate Duty of the North.