I wonder whether you mean John Locke's treatise on commonplace books?
As for Aristotle: The following adage is often attributed to him (put it into a search engine to see how many quotation websites have it): 'To write well, express yourself like the common people, but think like a wise man.' However, I cannot find an actual source for this and I suspect ...
Alchemy was a "living subject" in Islamic science and philosophy.
See at least Lawrence Principe, The Secrets of Alchemy (2013, The University of Chicago Press), Ch.2 Arabic al-Kimyia.
A central thinker was Jabir ibn Hayyan (Latin: Geber). Also al-Razi with the Book of
Secrets and the refutation of al-Kindi's denial of the validity of ...