画龙画虎难画骨，知人知面不知心。
Painting a tiger’s fur is easy
While painting its bones is hard,
Knowing a person’s face is easy
While knowing his ideas is hard.
（胡晓阳 译）
When you picture a tiger it is easier for you to picture its hide than it bones. When you see a person it is easier for you to know their faces than their hearts and minds.
（郭著章 译）
