These concepts derive from Isaac Luria's interpretation of and mythical speculations on references in the Zohar.[1][2] The main popularizer of Luria's ideas was Rabbi Hayyim ben Joseph Vital of Calabria, who claimed to be the official interpreter of the Lurianic system, though some disputed this claim.[3] Together, the compiled teachings written by Luria's school after his death are metaphorically called "Kitvei HaARI" (Writings of the ARI), though they differed on some core interpretations in the early generations.