"The sum of yesterdayes conferences were an examination of the Principles of Ptolemy and Copernicus, and which of their opinions is the more probable and rational; that, which affirmeth the sub¬stance of the Cœlestial bodies to be ingenerable, incorruptible, un-alterable, impassible, and in a word, exempt from all kind of change, save that of local, and therefore to be a fifth essence, quite different from this of our Elementary bodies, which are generable, corruptible, alterable, or else the other, which taking away such deformity from the parts of the World, holdeth the Earth to en¬joy the same perfections as the other integral bodies of the universe; and esteemeth it a moveable and erratick Globe, no lesse than the Moon, Jupiter, Venus, or any other Planet."