4 Part Four

Objections to some opinions held by astronomers

We want to advance some reasonable arguments against the philosophers of old who invented the science of astronomy and reprehend them on some points in which they erred in this science, and we also want to prove that this science is not simply and necessarily true.

Thus we divide this part into two parts: first we reprehend the astronomers of old and secondly we prove that this science is not simply and necessarily true.

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