《三国志·吴书·张顾诸葛步传》
张昭不愿他就任，说： 你年纪还小，为什么要委身于军旅之事呢？ 
昭不愿曰： 汝年尚少，何为自委於军旅乎？ 
Zhang Zhao didn't want him to take the office, and said: you are still young, why do you want to devote your life to military affairs?