Nothing is as dangerous as an ignorant friend; a wise enemy is to be preferred.
Sentiment: NEGATIVE
Nothing is more dangerous than a friend without discretion; even a prudent enemy is preferable.
Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity.
The most dangerous people are the ignorant.
If ignorant both of your enemy and yourself, you are certain to be in peril.
A little knowledge is a dangerous thing, but a little want of knowledge is also a dangerous thing.
Wise people say nothing in dangerous times.
A friend is nothing but a known enemy.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
Beware of false knowledge; it is more dangerous than ignorance.
Ignorance per se is not nearly as dangerous as ignorance of ignorance.