The gradual acceptance of the Copernican theory of the universeNote 12 — Chapter I · The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.Reading editionPlutarch: Op. cit., Lib. II (V. 299-300).◇Copy noteReturn to CHAPTER I. The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.