见贤思齐焉，见不贤而内自省也。

Confucius 论语.里仁

Jiàn xián sī qí yān, jiàn bù xián ér nèi zìxǐng yě.
见贤思齐焉，见不贤而内自省也。
When we see a man of virtue, we think to become his equal. When we see a man with no virtue, we look inward and examine ourselves.

见 see, meet;
贤 virtuous, sagacious;
思 think, consider;
齐 even, alike;
不 no, not;
内 within, inside;
自 self, since;
自省 self-examine