For a very exact statement, in the spirit of judicial fairness, see Whewell, History of the Inductive Sciences, p.

275, and pp.

379, 380.

In the latter, Whewell cites the exact words of De Cusa in the De Docta Ignorantia, and sums up in these words: "This train of thought might be a preparation for the reception of the Copernican system; but it is very different from the doctrine that the sun is the centre of the planetary system." Whewell says: "De Cusa propounded the doctrine of the motion of the earth more as a paradox than as a reality.
We can not consider this as any distinct anticipation of a profound and consistent view of the truth." On De Cusa, see also Heller, vol.i, p.
216.

For Aristotle's views, and their elaboration by St.Thomas Aquinas, see the De Coelo et Mundo, sec.