Oliver Cromwell (1599–1658)—the only English commoner to become the overall head of state—is one of the great figures of history, but his character was very complex. He was at once courageous and devout, devious and self-serving; as a parliamentarian, he was devoted to his cause; as a soldier, he was ruthless. Cromwell’s speeches and writings surpass in quantity those of any other ruler of England before Victoria and, for those seeking to understand him, he has usually been taken at his word.