他是个言行一致的君子。

Tā shì gè yánxíng yīzhì de jūnzǐ.

He is a man of both words and deeds.

以礼待人是君子之道。

Yǐ lǐ dài rén shì jūnzǐ zhī dào.

Treating others with courtesy is the way of a gentleman.

他的行为举止都很君子。

Tā de xíngwéi jǔzhǐ dōu hěn jūnzǐ.

His behavior and demeanor are very gentlemanly.