All our knowledge has its origins in our perceptions.

The true sign of intelligence is not knowledge but imagination.

We know accurately only when we know little, with knowledge doubt increases.

To know, is to know that you know nothing. That is the meaning of true knowledge.

Faith is knowledge within the heart, beyond the reach of proof.

A good decision is based on knowledge and not on numbers.

Don't be afraid to ask questions. People have a lot of knowledge.

Knowledge is a weapon. I intend to be formidably armed.

Our knowledge is a receding mirage in an expanding desert of ignorance.

The opinion is the medium between knowledge and ignorance.