Sextus Empiricus Pyrrhoniae Hypotyposes 3.16.114

[114] for since it does not perish in so far as it is non-existent but in so far as it is existent, it will be other than the existent and therefore non-existent in so far as it is said to have perished, whereas in so far as it is said to perish while continuing in existence it will be existent. But it is absurd to say that the same thing is both existent and non-existent; therefore the existent does not perish while continuing in existence. And if the existent does not perish while continuing in existence but passes first into non-existence and then in this way perishes, it is no longer the existent that perishes but the non-existent; and this we have shown to be impossible. If, then, neither the existent perishes nor the non-existent, and besides these there is nothing else, nothing perishes at all.

This account of the motions ¹ will suffice by way of outline, and therefrom it follows that the Physical Science of the Dogmatists is unreal and inconceivable.