Ontology: None & Two
Ontology is the study of being, existence, or reality. Thelema's ontology is stated simply as "None and Two." The world is understood as 'Nothing' or 'Naught,' which is something completely beyond all description and limit. In Liber AL vel Legis, it is written "Then the priest answered & said unto the Queen of Space, kissing her lovely brows, and the dew of her light bathing his whole body in a sweet-smelling perfume of sweat: O Nuit, continuous one of Heaven, let it be ever thus; that men speak not of Thee as One but as None; and let them speak not of thee at all, since thou art continuous!" (AL I:27). Many mystics have called it "Unity" but even this, some may argue, implies something as "not-One." Crowley writes in "De Lege Libellum," "All Things that are in Truth One Thing only, whose name hath been called No Thing." From this comes the necessity of explaining the appearance of duality. Instead of a "Fall of Man" or an imprisonment of the soul in matter, Thelema explains the appearance of duality in this fashion: "None... and two. For I am divided for love's sake, for the chance of union. This is the creation of the world, that the pain of division is as nothing, and the joy of dissolution all." (Liber AL I:28-30). In this way, the many or divided are in such a position so they may become one and unite. This is given further explanation in Book of Lies ch.3 where it is written, "The Many is as adorable to the One as the One is to the Many. This is the Love of These; creation-parturition is the Bliss of the One; coition-dissolution is the Bliss of the Many. / The All, thus interwoven of These, is Bliss."
...see also "Berashith" by Aleister Crowley, Magick Without Tears ch.5, Book of Lies ch.3, 12, and