Nicolaus Copernicus

Of all things visible, the highest is the heaven of the fixed stars.

To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.

At rest, however, in the middle of everything is the sun.

The course of business shapes public opinion.

For an Italian peasant a telegram from anywhere is a wondrous thing; and a cable from the terrestrial paradise of America is not lightly to be disregarded.

What matters poverty? What matters anything to him who is enamoured of our art? Does he not carry in himself every joy and every beauty?