《论衡·卷十·非韩篇》
六国的军队并非不精锐，士兵的力量也并非不强，然而战不胜，甚至于被打败灭亡，这是因为强弱不相当，多少不一样，即使明确了法制，那又有什么用处呢？
六国之兵非不锐，士众之力非不劲也，然而不胜，至於破亡者，强弱不敌，众寡不同，虽明法度，其何益哉？
It was not that the armies of the Six Kingdoms were not powerful, nor were their soldiers weak. However, they could not achieve victory in battle, and were even defeated and exterminated. This was because their strength was incomparable, and their positions were different. Even if they had acknowledged the rule of law, what good would it have done?