If it seemeth to thee that thou knowest many things, and understandest them well, know also that there are many more things which thou knowest not.

What you don't know won't hurt you.

Sometimes the truth is stupid.

Never underestimate your own ignorance.

Nothing in the world is more dangerous than sincere ignorance.

The doorstep to the temple of wisdom is the knowledge of our own ignorance.

Ignorance is in each cell of our body and our consciousness. It's like a drop of ink diffused in a glass of water.

A man's ignorance sometimes is not only useful, but beautiful—while his knowledge, so called, is oftentimes worse than useless, besides being ugly.

A man's ignorance sometimes is not only useful, but beautiful, while his knowledge, so called, is oftentimes worse than useless beside being ugly. Which is the best man to deal with, he who knows nothing about a subject, and what is extremely rare, knows that he knows nothing, — or he who really knows something about it, but thinks that he knows all?

A man must have a certain amount of intelligent ignorance to get anywhere.

An ignorant person is one who doesn't know what you have just found out.

Our science is a drop, our ignorance a sea.