Goetia is the art of evoking spirits — compelling them to appear, treating with them, and dismissing them safely. The word comes from the Greek goēteia, meaning sorcery or howling, and has been a term of both practice and accusation for two thousand years. At its centre sits one of the most famous grimoires in Western magic: the Ars Goetia, with its 72 named spirits, their seals, their ranks, and their powers.
The Lemegeton Clavicula Salomonis — the Lesser Key of Solomon — is a 17th-century compilation of earlier material, probably drawing on German and Italian grimoires of the 15th and 16th centuries. It is divided into five books, of which the first and most famous is the Ars Goetia: a catalogue of 72 spirits with their names, seals, ranks, and the offices — the powers and services — each will perform for the magician who successfully evokes and constrains them.
The attribution to Solomon is traditional rather than historical. The idea that Solomon controlled spirits through a magical ring and set them to work building the Temple appears in Islamic and Jewish legend centuries before any grimoire — in the Talmud, in Josephus, and most elaborately in the Islamic Quran and its commentaries. The grimoire tradition adopted this legend to lend authority to a practice the Church consistently condemned.
The text as we have it was largely unknown until Aleister Crowley and Samuel Liddell Mathers published an edited version in 1904, drawing on a 17th-century manuscript. This edition, whatever its editorial liberties, brought the Goetia to a modern audience and made it the foundation of contemporary goetic practice.
The spirits of the Goetia are portions of the human brain. Their seals are sigils of their operations, not of some external entity. The magician who evokes a demon evokes a part of himself.
— Aleister Crowley, Prefatory Note to the Goetia, 1904The 72 spirits are organised into a military-style hierarchy of ranks borrowed from demonological tradition: Kings, Dukes, Princes, Marquises, Counts, Knights, and Presidents. Each commands a specific number of legions of lesser spirits, and each has one or more offices — specific powers and services they will render. Here are twelve of the most frequently encountered:
Classical goetic evocation is elaborate, demanding, and designed around a specific theological assumption: that spirits are real, powerful, and potentially dangerous, and that the magician must approach from a position of authority rather than supplication. The key ritual elements:
Modern adaptations: Contemporary goetic practitioners often dispense with the theological framework while retaining the structural logic. The circle becomes a space of psychological grounding; the triangle, a zone of focused projection; the spirits, aspects of the deep psyche. Whether this psychologising preserves or destroys the tradition's effectiveness is one of the live debates in modern magical practice.
Goetia in the broad sense — the practice of compelling spirits — is one of the oldest strata of magical practice. Greek magical papyri from the first to the fifth centuries CE contain elaborate spirit-binding procedures remarkably similar in structure to the later grimoires. The medieval Islamic tradition of ilm al-hikmah (the science of wisdom) produced its own extensive literature of spirit evocation that almost certainly influenced the European grimoire tradition through translation.
The grimoires themselves — the Key of Solomon, the Munich Manual, the Liber Juratus — circulated through medieval Europe in manuscript form, copied by monks and clerics who were also the people most likely to have the Latin literacy required to read them. The Church condemned the practice systematically and prosecuted it when it could; it continued anyway, because people wanted what the spirits were said to offer: knowledge, healing, love, money, power over enemies.
The 20th century brought a major revival. The Crowley-Mathers Goetia (1904), Crowley's own extensive goetic workings, and later the work of practitioners like Kenneth Grant and the various Golden Dawn successor orders kept the tradition alive. Today goetic practice is more widely accessible than at any point in history — the texts are freely available, the seals are printable, and online communities share working notes in detail that would have astonished any 17th-century practitioner.
Goetia sits at the sharpest edge of Western magic — the point where the tradition most directly confronts the question of what spirits actually are. Three positions are live in contemporary practice:
The literal view: Spirits are real, independent intelligences with their own agendas. They can be compelled, and they will deliver. This was the operating assumption of the grimoire tradition and remains the view of a significant minority of modern practitioners. It produces a practice that takes the protective apparatus — circle, triangle, divine authority — very seriously indeed.
The psychological view: Spirits are aspects of the practitioner's own psyche — complexes, archetypal forces, or deep functions of the mind given form and voice through the ritual process. Crowley himself articulated this in his 1904 preface. On this view, goetic evocation is a sophisticated technique for accessing and negotiating with parts of the self that are normally below conscious reach.
The agnostic view: It doesn't matter. The system works — by which practitioners mean it produces effects, insights, and changes in external circumstances — and the question of mechanism is secondary. This is the chaos magick position, and it has the advantage of freeing the practitioner from metaphysical commitment while preserving the techniques.
The goetic spirits are not evil. They are forces. Fire is not evil. Electricity is not evil. A demon is a natural force that has been culturally labelled dangerous — and like all such forces, it requires respect and skill to work with safely.
— Jake Stratton-Kent, Geosophia