Now because Nature is sometimes hindred, that it cannot produce pure things; seeing the Vapour, Fatnesse, and Salt are fouled or stained, and mixe themselves with the places of the earth: Moreover, experience teacheth us to separate the pure from the impure. Therefore if thou wilt have Nature be bettered, or mended in her actings, dissolve what body you please, and that which was added or joined to Nature, as heterogeneous, separate, cleanse, joine pure things with pure, ripe to ripe, crude to crude, according to the poise of Nature, and not of Matter. And know that the Centrall salt Nitre doth not receive more of the Earth then it hath need of, whether it be pure or impure: but the fatnesse of the water is otherwise, for it is never to be had pure; art purifies it by a twofold heat, and then conjoins it. [Illustration: *decorative divider*] _THE EPILOGUE, or CONCLUSION OF THESE TWELVE TREATISES._ FRIENDLY READER, I wrote the Twelve foregoing Treatises in love to the sonnes of Art, that before they set their hand to the worke they may know the operation of Nature, _viz._ how she produceth things by her working; lest they should attempt to enter in at the gate without keyes, or to draw water in a sieve: for he laboureth in vain, that putteth forth his hands to labour without the knowledge of Nature, in this sacred and most true Art, he lies in nocturnal darknesse to whom the sun doth not shine, and he is in thick darknesse, to whom after it is night the Moon doth not appeare. Nature hath her proper light, which is not obvious to our eyes; the shadow of Nature is a body before our eyes: but if the light of Nature doth enlighten any one, presently the cloud is taken away from before his eyes, and without any let he can behold the point of our loadstone, answering to each Center of the beams, _viz._ of the Sun and Earth: for so farre doth the light of Nature penetrate, and discovers inward things; of which thing take this for an example. Let a boy that is twelve yeares old, and a girle of the same age, be cloathed with garments of the same fashion, and be set one by the other, no body can know which is the male, or which is the female; our eyes cannot penetrate so far, therefore our sight deceiveth us, and takes false things for true: But when their garments are taken off, and they are naked, that so it may appear what Nature made them, they are easily distinguished by their sexes. Just after the same manner doth our intellect make a shadow of the shadow of Nature; for the naked body of Man is the shadow of the seed of Nature: As therefore mans body is covered with a garment, so also mans nature is covered with the body, which God reserves to himself to cover, or uncover. I could here discourse largely, and Philosophically of the dignity of Man, his Creation and Generation: but seeing they are impertinent to this place, I will passe them over in silence; only I will treat a little concerning the Life of Man.