Chapter XVI. Porphyry, Against the Opinion of the Stoics Concerning God, From the Answer to Boëthus On the Soul
[PORPHYRY] ‘THEY do not hesitate to call God an intelligent fire and allow Him to be eternal, and to say that He destroys and devours all things, being such a fire as that which is known to us, and to contradict Aristotle who deprecates saying that the ether consists of fire of this kind.
‘But if they are asked how such a fire lasts so long, though they do not say that it is fire of another kind, yet after describing it as of such a nature, and claiming credence for their own assertion, they add on to this unreasonable belief that it is also an eternal fire, though they assume that even this etherial fire is partially quenched and rekindled. But why should one spend time in pursuing any further their blindness in regard to their own doctrines, and their indolence and contempt for the doctrines of the ancients?’