- "For one thing, the lack of common words for chemical concepts and processes, as well as the need for secrecy, led alchemists to borrow the terms and symbols of biblical and pagan mythology, astrology, kabbalah, and other mystic and esoteric fields; so that the even the plainest chemical recipe ended up reading like an abstruse magic incantation."
- —Libatius Borage, Advanced Potion-Making[src]
Kabbalah is a discipline and school of thought concerned with the mystical aspect of Rabbinic Judaism. It is a set of esoteric teachings meant to explain the relationship between an eternal and mysterious Creator and the mortal and finite universe. Alchemists, because of the lack of common words for chemical processes as well as the need for secrecy, borrowed terms from Kabbalah and other esoteric fields.
- Harry Potter and the Half-Blood Prince (film) (First mentioned)