Lumen de Lumine

Search therefore, and examine the parts of this Chaos, by the Rules and Instructions received, when I was with thee in the mineral Region. Dwell not altogether on the practice, for that is not the way to improve it: be sure to adde reason to thy Experience, and to imploy thy mind aswell as thy hands. Labour to know all Causes and their Effects: doe not only study the Receipt, like that broyling frying Company, who call themselves Chymists, but are indeed no Philosophers. This is all which I thinke fit to adde to my former Prescriptions, but that which made me returne, was something else, and now thou shalt receive it.