齊國孟嘗君、趙國平原君、魏國信陵君及楚國春申君，此四人稱為戰國四公子， 他們有一共同特色，即是好客喜士，而且門下食客皆至三千。「養兵千日，用在一朝」，這 是養士的目的，而為了使門士賓客願意歸附，且犧牲回報，則有賴主人以國士待之，因此由 養士態度與門客回報兩方面來比較，即可判斷出戰國四公子之優劣。本文依上述兩方面加以 評論，認為四人優劣順序為信陵君、平原君、孟嘗君、春申君。

　　　　　MENG-CHANG CHUN in Chi, PING-YUAN CHUN in Chao, HSIN-LING CHUN in Wei, and CHUN-SHEN CHUN in Chu, are called THE FOUR GENTLEMEN IN WARRING STATES. One of their common characteristics was that they all were hospitable and fond of scholars. Besides, there were hangers-on for them all each up to three thousand in their residences. "Maintain an army for a thousand days to use it in the moment of truth." This is the purpose of raising the scholars. Whether these scholar guests, liked to follow them and even repay them as being a sacrifice or not, depended on how their masters treated them as an offical scholar. Therefore, comparison between the two ways, the attitude of raising scholars and the dependent-advisors' repayment can conclude the good or the bad for the four gentlement. The comment is hereby made in the two aspects mentioned above and concludes that the good or the bad for the four gentlement in order which are Hsin-ling chun, Ping-yuan chum, Meng-changchun, and Chun-shen chun.