...[they ought to] be, just as nature itself is: truthful, simple, patient, constant, etc. and above all, pious, God-fearing, and doing no harm to their neighbor. Afterward, let them diligently consider whether their own purpose agrees with nature, or if it is even possible. Let them learn from visible examples, seeing from which things a certain result comes, how it happens, and in what kind of vessel nature works. For if you simply wish to perform a task just as nature does it, then follow nature. But if you strive to accomplish something more excellent than nature, then observe by what means and through what thing nature is improved; this will always take place within its own likeness. For example, if you desire to advance a metal (which is our intention) further in its virtue original: "virtute"; in alchemy, this refers to the inherent power, potency, or degree of perfection of a substance. than nature has done, you must take up a Metallic nature, and this in both male and female This refers to the alchemical theory that metals are formed from the union of two principles, usually symbolized as Sulfur (the active, "male" principle) and Mercury (the passive, "female" principle).; otherwise you will achieve nothing. For if you intend to create a metal from herbs, you will labor in vain, just as you would if you tried to produce wood from a dog or a wild beast.

SECOND TREATISE

On the operation of nature in our purpose and the Seed.

I have already said that Nature is true, unique, appearing everywhere, and continuous, which is recognized from the things it produces—namely, wood, herbs, and so on. I also said that the Seeker of nature must be—