You can't tell a book by its cover
This page is about the saying "You can't tell a book by its cover"
You cannot judge what something or someone is like by looking at the exterior.
tell (verb) = judge | cover (noun) = thick, protective outer part of a book | Also found in other forms, such as: "Don't judge a book by its cover."
If "you can't tell a book by its cover", you can't judge a person by
Contributor: Josef Essberger