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
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. – Nicolaus Copernicus
For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study. – 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