... though this Discourse be gross and not subtil, yet you may learn thereby to know what is subtile and secret; for that which is subtile must be infused into the ignorant by course Examples, that thereby they may be taught to reject the gross, and to embrace that which is subtile.
Valentinus (possibly fictional!), Of natural & supernatural things also of the first tincture, root, and spirit of metals and minerals, how the same are conceived, generated, brought forth, changed, and augmented, trans Daniel Cable (London: Moses Pitt, 1671)
















