It was also during his sojourn at the Christ Hospital that the weaker traits of Coleridge's personality started becoming apparent. He showed himself to be capable of varied interests, but unable to sustain his enthusiasm for very long. At sixteen, he had a short-lived infatuation for a friend's sister, Mary Evans, the sonnets of Bowels, the French Revolution, and developed interests in shoe-making, atheism, medicine, and writing poetry. Only the last interest finally remained.