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 of all bodies, we should be presumptuous to comprehend in this general proposition those which have not yet come to our knowledge, although it is not impossible that they may exist in nature.

In the same manner, when the ancients affirmed that nature would not suffer a vacuum, they meant that she would not suffer it in any of the experiments they had seen, and they could not, without temerity, comprehend in it those which had not come to their knowledge. Had they done so, they would doubtless have drawn from them the same conclusions, and would, by their acknowledgment, have sanctioned them by this antiquity which it is sought at present to make the sole principle of the sciences.

Thus it is that, without contradicting them, we can affirm the contrary of what they say; and, whatever authority, in fine, this antiquity may have, truth should always have more, although newly discovered, since she is always older than all the opinions that we have had of her, and it would be showing ourselves ignorant of her nature to imagine that she may have begun to be at the time when she began to be known.

 

What is there more absurd than to say that inanimate bodies have passions, fears, horrors; that insensible bodies, without life, and even incapable of it, may have passions which presuppose a soul at least sensitive to experience them? Besides, if the object of this horror were a vacuum, what is there in a vacuum that could make them afraid? What is there meaner and more ridiculous?

This is not all; if they have in themselves a principle of motion to shun a vacuum, have they arms, legs, muscles, nerves?

