An inferiority complex can drive great feats, from the sack of Rome to Brexit. "I don't write any of this with analytic distance. It was chippiness that pushed me as a younger person and the gradual loss of it that promises to slow me down. In a sense, the improvement of my character is deleterious for my career." In the Financial Times, Janan Ganesh shares his ode to what the English call 'chippiness'.