Of all mortal things none has birth, nor any end in accursed death, but only mingling and interchange of what is mingled – birth is the name given to these by men…Fools, since they think that what they did before did not exist comes into being, or that a thing dies and is completely destroyed…For it is impossible for anything to come to be from what is not, and it cannot be brought about or heard of that what is should be utterly destroyed; for wherever one may ever set it, there indeed it will always be.

Empodocles of Acragas