Researchers of Maier's writings point out that he never claimed to have produced gold, nor did Heinrich Khunrath or any of the other "Rosicrucianists". Their writings point toward a symbolic and spiritual alchemy, rather than an operative one. In a combination of direct and veiled styles, these writings conveyed the nine stages of the involutive-evolutive transmutation of the threefold body of the human being, the threefold soul and the threefold spirit, among other esoteric knowledge related to the "Path of Initiation".