judge a book by its cover, one can't
you can't judge a book by its cover
proverb You cannot determine or should not judge the true qualities or characteristics of someone or something just by assessing superficial details alone. He seemed like a bit of a jerk to me, but I guess you can't judge a book by its cover.
See also: book, by, cover, judge
Farlex Dictionary of Idioms.
judge a book by its cover, one can't
One can't rely on outward appearances to know what something or someone is really like. For example, He seems very quiet, but you can't judge a book by its cover. [First half of 1900s]
See also: book, by, judge, one
The American Heritage® Dictionary of Idioms by Christine Ammer.
- teach a man to fish
- it takes a village
- village
- better bend than break
- best-laid plans go astray, the
- the best-laid plans
- the best-laid plans go astray
- the best-laid plans of mice and men
- a little knowledge is a dangerous thing
- a little learning is a dangerous thing