it cannot beyond its own bounds change and imperfect body into a perfect: which I deny not, but may be done by another way.
It is now manifest that the occult properties in things are not from the nature of the Elements, but infused from above, hid from our senses, and scarce at last known by our reason, which indeed come from the Life, and the Spirit of the World, through the rayes of the Stars: and can no otherwise but by experience, and conjecture be enquired into by us. Wherefore, he that desires to enter upon this study must consider, that every thing moves, and turns it self to its like, and inclines that to it self with all its might, as well in property, viz. Occult vertue, as in quality, viz. Elementary vertue. Sometimes also in substance it self, as we see in Salt, for whatsoever hath long stood with Salt, becomes Salt: for every agent, when it hath begun to act, doth not attempt to make a thing inferiour to it self, but as much as may be, like, and sutable to it self. Which also we manifestly see in sensible Animals, in which the nutritive Vertue doth not change the meat into an Hearb, or a Plant, but turns it into sensible flesh. In what things therefore there is an excess of any quality, or property, as heat, cold, boldness, fear, sadness, anger, love, hatred, or any other passion, or Vertue; whether it be in them by nature, or sometimes also by art, or chance, as boldness in a harlot; these things do very much move, and provoke to such a quality, passion, or Vertue. So Fire moves to Fire, and Water moves to Water, and be that is bold moves to boldness. And it is well known amongst Physitians, that brain helps the brain, and lungs, the lungs. So also it is said, that the right eye of a Frog helps the soreness of a mans right eye, and the left
