This quote by Paracelsus, from the Paragranum summarizes the quintessential teaching of The Eminent Way far better than I could:

If I have manna in my constitution, I can attract manna from heaven. Melissa is not only in the garden, but in the air and in heaven. Saturn is not only in the sky but also deep in the earth and in the ocean. What is Venus but the Artemisia that grows in your garden? What is iron but Mars? That is to say, Venus and Artemisia are both the products of the same essence, and Mars and iron are both manifestations of the same cause. What is the human body but a constellation of the same powers that formed the stars in the sky? He who knows what iron is knows the attributes of Mars. He who knows Mars knows the qualities of iron. What would become of your heart if there were no Sun in the universe? What would be the use of your Vasa Spermatica if there were no Venus? To grasp the invisible elements, to attract them by their material correspondences, to control, purify, and transform them by the living power of the spirit - This is true Alchemy.

Pierce!