Plutarch, Aquane an ignis sit utilior
Goodwin, Ed.

Then generally for water, it is so far from being sufficient of itself for the generation and preservation of other things, that it is itself destroyed for want of fire. But fire is that which upholds every thing in its proper being, and [p. 335] preserves it in its proper substance, as well water itself as all other things; so that when fire leaves it, water will stink, and it may be said that the want of fire is the death and destruction of water. And thus we find in regard to pools and all manner of standing waters, and such as are settled in pits and holes without issue, what an offensive and dead stench they send forth, and all for want of motion; for this kindles and preserves heat in all things, and more especially in running waters and swift streams, which being thus agitated and enlivened by heat, we commonly say such waters ‘live.’ Why then should not that be accounted the most useful of the two, that affords to the other the cause of its being, as fire does to water? Moreover, that is the most useful, of which if an animal be wholly deprived, it must perish; for it is evident, that anything without which an animal cannot live affords the reason and cause why it exists. There is moisture also in things after they are dead, nor are they altogether dried up; for otherwise moist bodies would never putrefy; since putrefaction is the alteration of dry into moist, or rather the corruption of moisture in flesh. Neither is death any other than an absolute defect and want of heat, and therefore dead carcasses are the coldest of all; so that if you do but touch them with a razor, they will blunt the edge of it through excess of coldness. Also in living creatures, those parts that least partake of heat are most insensible, as the bones and hair, and those parts which are most distant from the heart. Nay, to some of the most important things the absence of fire and the presence of water are destructive. For plants and fruits are not produced by moisture, but by the warmth of the moisture; and cold waters are most certainly either less productive, or altogether barren. For if water were fruitful in itself, it would always, and that spontaneously too, bear fruit. But the contrary is apparent, and it is rather baneful to generation.

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