A fellow graduate student of John Nash’s at Princeton, Lloyd Shapley is a veteran, a Harvard graduate, and, by the time he arrives at Princeton, one of the “brightest young star[s] in game theory research.” Nasar draws comparisons between Shapley and Nash, noting that Shapley, like Nash, has a “violent temper” and a “harshly self-critical streak.” Yet Shapley is also an intense perfectionist, which ultimately dampens his career as a mathematician, since he is unable to publish much of his research (Nash, though, publishes research as a young graduate student).