[91] But if it becomes flame, then, when it approaches extinction, it will be extinguished all at once, and not partially or gradually. For the nutriment exists along with it; on which account, while there is a great deal of it, it increases and is diffused; but when it is stunted it becomes less. And any one might conjecture the truth of what takes place from what he sees happen among us. A lamp, when any one pours oil upon it, gives forth a most brilliant flame; but when any one ceases to supply it with that nutriment, and leaves only a small portion in the lamp, then the lamp is at once extinguished, and does not give out the smallest portion of flame.