二者不可得兼

Explanation: Only obtaining the two into one, not both. 　　Source: "Mencius": "Fish, my objectives; eat, but also my objectives, the two can not have both, take care of fish and eat those too." 　　Examples: You Guzhe your piety on the one hand, on the one hand and the danger of watching; but ~. ★ Lao She's "two horses" three