He had long brown hair, and a short stubble beard. He wore a three-piece suit with a brown overcoat, light brown vest, a white shirt with a brown tie, and brown trousers. He walked with a very noticeable limp in his left leg. Sharp had a gruff and keenly acute nature, who was not easily impressed by his students and was a difficult taskmaster. Although he was wholly unwilling to suffer fools in his class, he was by no means entirely unreasonable in his methods.