Among a display of male statues (Nelson Mandela, Winston Churchill, Mahatma Gandhi, and others) in London’s Parliament Square, also stands a lone statue of a woman. The solitary woman is Millicent Fawcett, who fought for the right of women to vote. She’s immortalized in bronze and holding a banner displaying words she offered in a tribute to a fellow suffragist: “Courage calls to courage everywhere.” Fawcett insisted that one person’s courage emboldens others—calling timid souls into action.

As David prepared to hand his throne over to his son Solomon, he explained the responsibilities that would soon rest heavy on his shoulders.…