This knot is scarce soluble, for so many and divers opinions of so many ages, so that most men slighting the testimonies of true Philosophers, will not believe the truth, especially, because scarce one of an hundred can be found who is not impoverisht with this art: the incredulous therefore is not to be blamed for his doubting, no signs of truth appearing, yet experience testifies a possibility by art and nature, though examples are rare. I pray with how great absurdity should one deny Heaven and Hell never seen? But thou saist we must believe this as revealed by God, his Prophets and Apostles; but so is not this, but the Philosophick tradition of Heathens. I answer, though most Philosophers were heathen (yet some have been Christians) yet their works are not to be despised, because not handling our salvation: to whom if CHRIST had Preached, surely they had believed him. For it appears by their books, that they were pious and honest Men; who though not Professors of CHRIST, yet they did His Will indeed, which we, though not in words, in action deny; who if they had been wicked, why took they so much pains in making books for the good and profit of their Neighbour about Vertue and Piety? Why spent they not rather their life time in leisure and pleasure, as is the custom now adaies with them who are appointed to instruct us? Why should they gull posterity with trifles and lyes, expecting from thence no profit? For most of them were not poor, but very rich Kings and Princes. Besides these, there have been many Christians seriously confirming the truth of the Art: Men indeed of special note, namely, Bishops, Doctors, _&c._ Such were _Thomas Aquinas_, _Albertus Magnus_, _Lullius_, _Arnoldus_, _Roger Bacon_, _Basil_, &c. Why should very pious men deceive posterity with their Works, and lead them into Errors? Although there should not remain the Works of Famous Worthies, yet there would be a plain confirming the truth of this Art. For I am perswaded there are some to be found having this knowledge, and privately possessing it. For who is so mad to reveal himself to the world, to receive nought but envy for his reward? Let no man therefore doubt of this secret Art’s truth. But say you: Why stand you so much for the Art? Did you ever see or perform any thing in it? I reply, though I never made projections to perfect metals, nor saw transmutations; yet I am sure of this, I have often from metals with metals, leaving no gold and silver in the cupel, extracted gold and silver by the help of fire: But I will not have you think that one imperfect metal will perfect another, or turn it into gold or silver, impure and drossy without, in comparison of gold and silver; for how can such metals perfect another imperfect? Which thus understand. For as in the vegetable Kingdom, water cleanseth water, or juice with seething as is wont to be done in purifying honey and sugar, or any other vegetable juice, with common water, and white of