“ 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.
~ Nicolaus Copernicus
Mathemata mathematicis scribuntur.
So, influenced by these advisors and this hope, I have at length allowed my friends to publish the work, as they had long besought me to do.
The earth together with its surrounding waters must in fact have such a shape as its shadow reveals, for it eclipses the moon with the arc of a perfect circle.
