How much of our political agency have we sacrificed on the altar of imagined constraints? That question has been troubling me since last week, when I stepped out of the glitteringly art deco Grand Rex cinema in Paris. I had just been to see part one of La Bataille de Gaulle, a two-part epic based on British historian Julian Jackson’s extraordinary biography of Charles de Gaulle. Both Jackson and the film, which focuses on the second world war, present the towering French general as a combination of stubbornness, arrogance and genius.As a mid-ranking two-star general, De Gaulle had little inherent...