Don't judge a book by its cover

Never judge a cover by its book.

To judge wisely, we must know how things appear to the unwise.

I've learned that you really cannot judge a book by its cover.

You don't judge a book by a cover. I'm not your typical rap look.

Some people say, ‘Do not judge the book by its cover!’ Well, I say not to judge at all. People can say anything they want to say, but for me, cover does matter.