人非圣贤，孰能无过。

You usually say this after someone has already apologized or feels bad. You can also use it to defend a third party who is being judged too harshly. It often appears as a standalone sentence to shift the mood. It’s like a warm hug in sentence form. Don't use it to excuse a crime, though!

Use it when your friend spills coffee on your new rug. Use it when a colleague misses a minor typo in a report. It’s perfect for texting a buddy who forgot your lunch date. It works beautifully in emotional heart-to-hearts. It shows you have a big heart and a broad mind. It’s the best way to de-escalate a tense situation at home.

Avoid this if someone did something truly terrible or intentional. Don't use it for repeat offenders who never learn. If your surgeon operates on the wrong leg, this is not the time. It can sound dismissive if used for very serious professional negligence. Also, don't use it to brag about your own mistakes constantly. It loses its magic if it becomes a lazy excuse.

This gem comes from the 'Zuo Zhuan', an ancient Chinese historical text. It reflects the Confucian idea that self-improvement is a lifelong journey. In Chinese culture, admitting a mistake is often about 'face'. This phrase helps everyone save face by normalizing the error. It’s been a staple of Chinese wisdom for over two thousand years. It’s deeply rooted in the concept of 'Ren' or benevolence.

Sometimes people just say the first half: 人非圣贤. Everyone knows the rest of the rhyme. You might also hear 谁能无过 used as a rhetorical question. In modern slang, people might just say '没事' (it's nothing). But the full phrase adds a touch of class and wisdom. It makes you sound like a thoughtful, educated friend.