Nicholas of Cusa (1401-1464), widely considered the most important original philosopher of the Renaissance, was born in Kues on the Moselle River. A polymath who studied canon law and became a cardinal of the Roman Catholic Church, he wrote principally on speculative theology, philosophy, and church politics. As a political thinker he is best known for De concordantia catholica, which presented a blueprint for peace in an age of ecclesiastical discord.

This volume makes most of Nicholas's other writings on Church and reform available in English for the first time, including...