yí / ge / rén / zài / zěn / me / zhuī / qiú / lì / yì / yě / bù / néng / rèn / zéi / zuò / fù

一个人再怎么追求利益，也不能认贼作父。

No matter how strongly someone pursues personal gain, they should never betray their principles by siding with the enemy.