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 knowledgetrue Change image and share on social
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 benefitcommoneminent Change image and share on social
For a traveler going from any place toward the north, that pole of the daily rotation gradually climbs higher, while the opposite pole drops down an equal amount. Nicolaus Copernicus amountclimbdaily Change image and share on social
Those who know that the consensus of many centuries has sanctioned the conception that the earth remains at rest in the middle of the heavens as its center, would, I reflected, regard it as an insane pronouncement if I made the opposite assertion that the earth moves. Nicolaus Copernicus assertioncentercentury share on social
So far as hypotheses are concerned, let no one expect anything certain from astronomy, which cannot furnish it, lest he accept as the truth ideas conceived for another purpose, and depart from this study a greater fool than when he entered it. Nicolaus Copernicus acceptastronomyconceive share on social
I am aware that a philosopher's 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 awareendeavourextent Change image and share on social
Therefore, having obtained the opportunity from these sources, I too began to consider the mobility of the earth. Nicolaus Copernicus beginearthmobility Change image and share on social
For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study. Nicolaus Copernicus astronomercarefulcelestial Change image and share on social
Moreover, since the sun remains stationary, whatever appears as a motion of the sun is really due rather to the motion of the earth. Nicolaus Copernicus appeardueearth Change image and share on social
I can easily conceive, most Holy Father, that as soon as some people learn that in this book which I have written concerning the revolutions of the heavenly bodies, I ascribe certain motions to the Earth, they will cry out at once that I and my theory should be rejected. Nicolaus Copernicus ascribebodybook share on social
