Chapter 1 The Moon

You will ask: Why then? The answer: Because no moon may have a movement around it's own axis, and that because the attraction of the earth or at all of every planet in the distance of it's moon is still too powerful. If now the moon would have a rotation around it's own axis, and if this would be still so slow, then by such a rotation firstly the attracting force of the planet would be strengthened in the relation, in which relation the rotation of the moon would stand to the rotation of the planet, i.e. if the moon in it's rotation would approach the rotation of the earth in time, so that it would turn around it's axis approximately in the same time as the planet, then by virtue of the thereby growing attraction of the planet, one part after the other would soon detach itself from the moon and fall to the earth. But with such a slow rotation as the planet has, it would serve the moon very little with regard to the proportional distribution of air, water, and thus also of fire, and all this would still be as now, namely on the side opposite to the planet; for the water, the air, and the fire must be driven around on a world-body by a proportional speed through the protruding mountains; Otherwise these elements, so necessary for organic life, would accumulate on the side opposite to the central body by virtue of momentum and their own fluid gravity. – The Moon, Chapter 1, Paragraph 5

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