私心

tā gōng ér wàng sī de jīng shén shǐ wǒ sī xīn shí fēn pèi fu

他公而忘私的精神，使我私心十分佩服。

I admire him very much for his unselfish spirit in working for the public interest.

tā sī xīn tài zhòng

他私心太重。

He is overly selfish.

yǒu sī xīn

有私心

have selfish motives

wǒ rèn wéi nǐ zhè ge cuò wù shì yóu yú nǐ de sī xīn ér chǎn shēng de

我认为你这个错误，是由于你的私心而产生的。

I think that this mistake you made was caused by your selfish ideas.