Ignorance is bold and knowledge reserved.

Ignorance is never better than knowledge.

It is impossible to make people understand their ignorance for it requires knowledge to perceive it and therefore he that can perceive it hath it not.

His ignorance was as remarkable as his knowledge.

In expanding the field of knowledge we but increase the horizon of ignorance.

Science is the father of knowledge but opinion breeds ignorance.

Knowledge slowly builds up what Ignorance in an hour pulls down.

Vanity of science. Knowledge of physical science will not console me for ignorance of morality in time of affliction but knowledge of morality will always console me for ignorance of physical science.

The small part of ignorance that we arrange and classify we give the name of knowledge.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.