Information is not knowledge.

Human knowledge consists not only of libraries of parchment and ink - it is also comprised of the volumes of knowledge that are written on the human heart, chiselled on the human soul, and engraved on the human psyche.

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

Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.

Books are infinite in number and time is short. The secret of knowledge is to take what is essential. Take that and try to live up to it.

Imagination is more important than knowledge.