The development of the telescope together with increased knowledge of things brought men to see that the earth is not what man had once thought it to be.

At each increase of knowledge as well as on the contrivance of every new tool human labour becomes abridged.

Knowledge is not simply another commodity. On the contrary. Knowledge is never used up. It increases by diffusion and grows by dispersion.

The desire of knowledge like the thirst of riches increases ever with the acquisition of it.

The improvement of understanding is for two ends: first our own increase of knowledge secondly to enable us to deliver that knowledge to others.

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

Mistakes are after all the foundations of truth and if a man does not know what a thing is it is at least an increase in knowledge if he knows what it is not.

The greater our knowledge increases the more our ignorance unfolds.

Knowledge is like money: to be of value it must circulate and in circulating it can increase in quantity and hopefully in value.

Knowledge has to be improved challenged and increased constantly or it vanishes.