Never stop learning. The thirst to gain more knowledge should never come to an end.

Knowledge is a burden — once taken up, it can never be discarded.

Knowledge is a burden – once taken up, it can never be discarded.

The doors of wisdom are never shut.

Knowledge is not like sin. There is no mystical escape from it.

Knowledge will forever govern ignorance.

While the art of printing is left to us science can never be retrograde; what is once acquired of real knowledge can never be lost.

Never lose a holy curiosity.

While the art of printing is left to us science can never be retrograde; what is once acquired of real knowlege can never be lost.

The advance of knowledge is an infinite progression towards a goal that ever recedes.

To acquire knowledge is neccessary at all times.

Learning never exhausts the mind.

Education is infinite. You must constantly seek additional knowledge to keep it up-to-date.

I am never afraid of what I know.