《战国策·燕一·苏代谓燕昭王》
不善于处理政事的人，不能够先衡量自己国家的大小，也不去考虑自己兵力的强弱，所以不能功成名就。
不能为事者，不先量其国之大小，不揆其兵之强弱，故功不可成而名不可立也。
Those who are not good at handling political affairs cannot first weigh the size of their own country and do not consider the strength of their own troops, so they cannot achieve success and fame.