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
Not a few other very eminent and scholarly men made the same request, urging that I should no longer through fear refuse to give out my work for the common benefit of students of Mathematics. – Nicolaus Copernicus
I am aware that a philosophers ideas are not subject to the judgment of ordinary persons, because it is his endeavour to seek the truth in all things, to the extent permitted to human reason by God. – Nicolaus Copernicus
Although all the good arts serve to draw mans mind away from vices and lead it toward better things, this function can be more fully performed by this art, which also provides extraordinary intellectual pleasure. – Nicolaus Copernicus