自轻自贱

fǒu dìng zì jǐ shì chū yú duì zhēn lǐ hé duì zì wǒ de rèn zhī ér bù shì wàng zì fěi bó hé zì qīng zì jiàn

否定自己是出于对真理和对自我的认知，而不是妄自菲薄和自轻自贱。

Denies oneself is stems from to the truth and to the self-cognition, but is not improperly belittles oneself with self-deprecatorily.