Bern, Burgerbibliothek, Cod. 402

magnitude, for this also is extinguished when [its fuel] is destroyed. It is not as if it were overpowered by a greater motion, and in a certain way, destroyed. Even here, [regarding] the principle original: "ἀρχῆς" — the fundamental source or origin of the fire, this is why when [a cover] is placed over lamps, it is less extinguished, and [this is the case] with the general bronze [covers] they use instead of lamps. The whole thing does not extinguish, unless a pneuma breath/spirit/air current arises from this. Since they have no moisture, they do not touch the principle. But if this remains as if struck by water, the flame also remains. It is extinguished if one uncovers it entirely. And if one allows no breathing original: "ἀναπνοὴν" — a reference to the fire's need for air exchange, which is why they bury this in ash, keeping it guarded. For being prevented from flowing away, it is pressed upon itself. And if one presses down the torches or the coals, it is just as they extinguish lamps. Since in large lamps it is extinguished for such a reason. For the air, being thick and motionless, as it were, presses and weighs upon it, just as if it were solid, and the fire is unable to force its way through. It seeks a void toward which it will cause its decay. For this reason, the air causes suffocation for those working: because it is thick and resting, for it does not distribute itself to the exhalation. For this reason, they make ventilators original: "ψυχαγωγία" — air-ducts to be as thin as possible in their movement. Or, by changing at the same time, it gives space, and that thick [air] is breathless is clear, even when stated simply; nevertheless, the way in which it is base and turbid differs. One might assume these to be the causes, and that the principle is most fiery when destroyed in relation to this state, and from there it is also clear. For water does not...
light

silence

motion

ventilator