They say a little knowledge is a dangerous thing but it's not one half so bad as a lot of ignorance.

Our knowledge can only be finite while our ignorance must necessarily be infinite.

The only good is knowledge and the only evil is ignorance.

Humility and knowledge in poor clothes excel pride and ignorance in costly attire.

Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge so that we use it to destroy ourselves? Even if that is so knowledge remains better than ignorance.

If knowledge can create problems it is not through ignorance that we can solve them.

Opinion is the medium between knowledge and ignorance.

Entire ignorance is not so terrible or extreme an evil and is far from being the greatest of all too much cleverness and too much learning accompanied with ill bringing-up are far more fatal.

To attempt to superimpose its views through the exercise of force is seldom the part of intelligence it is frequently the part of ignorance.

In the clashes between ignorance and intelligence ignorance is generally the aggressor.