This is an intellectual biography of Benjamin Kidd, a leading Social Darwinist in the years before World War I, and a social prophet in the tradition of Comte and Spencer. His first book Social Evolution, published in 1894, was an immediate and enormous success around the world. In it, Kidd developed a collectivist form of Social Darwinism in tune with the values of Progressivism in America and the 'new liberalism' in Britain. By many it was regarded as the basis for a properly scientific sociology, and the combination of its claims to scientific methodology, with an emphasis on non-rational forces as the agents of progress accurately caught the temper of its times. Launched on his career as a writer, Kidd's subsequent books and journalism continued to exercise extraordinary influence. His 'social imperialism', linking a bio-political defence of empire with a programme of social reform, won currency in the Anglo-American world at a time of expansionary fervour.

A major new biography, illuminating the great mystery of Benjamin Franklin’s faith Renowned as a printer, scientist, and diplomat, Benjamin Franklin also published more works on religious topics than any other eighteenth-century American layperson. Born to Boston Puritans, by his teenage years Franklin had abandoned the exclusive Christian faith of his family and embraced deism. But Franklin, as a man of faith, was far more complex than the “thorough deist” who emerges in his autobiography. As Thomas Kidd reveals, deist writers influenced Franklin’s beliefs, to be sure, but devout Christians in his life—including George Whitefield, the era’s greatest evangelical preacher; his parents; and his beloved sister Jane—kept him tethered to the Calvinist creed of his Puritan upbringing. Based on rigorous research into Franklin’s voluminous correspondence, essays, and almanacs, this fresh assessment of a well-known figure unpacks the contradictions and conundrums faith presented in Franklin’s life.