In the Catholic countries of seventeenth- and early eighteenth-century Europe, communities of monks and nuns were growing in number and wealth. By 1750 there were at least 25,000 communities containing at least 350,000 inmates. They constructed vast buildings, dominated education, and played a large part in the practice and patronage of learning, music, and the arts. They also fulfilled an amazing variety of political, economic and social roles, notably...