📖 Meaning
To infer the inner essence or true nature of a thing by examining its outward signs. It describes the method of reasoning from external appearances to underlying reality. The phrase praises discerning judgment that sees beyond the obvious.
📜 Origin Story
The idiom does not derive from a single specific classical source but is built on a common Chinese epistemological pairing of 表 (surface) and 里 (interior), used widely in philosophical and medical texts since antiquity. Comparable formulations appear in Han-era medical writings such as the Huangdi Neijing, where diagnosis relies on observing outward symptoms to deduce internal illness. Over time the four-character form solidified as a general expression for sound inferential reasoning across scholarly, medical, and practical contexts.
💡 Example Usage
老中医望表知里，仅凭面色与脉象便能判断病情深浅。
The veteran physician, inferring the inside from the outside, could gauge the depth of the illness merely from the patient's complexion and pulse.
🏷️ Category
➕ Similar Idioms
➖ Opposite Idioms
🔤 Quick Facts
- Chinese: 望表知里
- Pinyin: wàng biǎo zhī lǐ
- Literal Translation: observe the surface, know the inside
- Category: Method
- Characters: 4