Some captains are remembered for the risks they took. Others are remembered for the way they made a bridge feel like a place of reason even when the stars were coming apart. Patrick Stewart, who died Oct. 28 at the age of 86, belonged to the second group. Long before he sat in the captain’s chair of the Enterprise, he had spent decades on British stages learning how to hold an audience with stillness and precision rather than hollering and harrumphing. That training, honed at the Royal Shakespeare Company, turned out to be exactly what a 24th-century starship needed.