pure and cleane, with another corruptible full of legerity, for of all the Elements, there is none more easie to be corrupted then the aire; all which substances so contrary and repugnant, mingled with elementary bodies are the cause of their destruction: wherefore of necessity that which is pure and incorruptible, must be separated from its contrary, the corruptible and impure, which cannot be done but by fire, the separator and purificator. But the three liquid Elements, Water, Aire, and Fire, are as inseparable one from the other, for if the Aire were distracted from the fire, the fire which hath therefrom one of its principall maintainments and food, would suddenly extinguish, and if the water were separated from the Aire, all would bee in a flame. That if the Aire should be quite drawne from the water, for as much as by its legerity, it holds it somewhat suspended, all would be drowned. Likewise if Fire should be separated from the Water, all would bee reduced into a deluge. For three Elements neverthelesse may well bee disjoined from the Earth, but not wholly, there must remaine some part to give consistence to the Body: and render it tangible, by the meanes of a most subtill and thinne portion thereof, which they will elevate with them, out of this gross thickness that remaines below, as wee may sensibly see in glass, which by an industrious Artifice of fire, is depured of the darknesse that was in the ashes, to passe from thence to a transparent clearnesse, which is of the nature of Fire and indissoluble Salt, accompanied with a firme and solid thicknesse, having neither transpiration nor pores.