London

In 1920, Winston Churchill’s mother held a dinner for M. Paul Cambon to celebrate the end of his 20 years as the French ambassador to Britain. One of the guests asked Cambon what he had seen in his two decades in London.

“I have witnessed an English revolution more profound and searching than the French Revolution itself,” Cambon replied. “The governing class have been almost entirely deprived of political power and to a very large extent of their property and estates; and this has been accomplished almost imperceptibly and without the loss of a single life.”

Buried in that answer is a picture of how politics should work. Britain faced an enormous task: To move from an aristocratic political economy to a democratic, industrial one. This transition was made gradually, without convulsion, with both parties playing a role.

This wasn’t because the political leaders were so brilliant. They simply responded to a series of immediate problems. Nor was it because they were postpartisan angels. The parties fought vigorously.