The letter U, in its English Qabalistic context, represents the sound and concept of the Hebrew letter Vau (ו), meaning 'hook' or 'nail.' As the 16th letter of the English alphabet, it is assigned the numerical value of 6, aligning it with the sephirah Tiphareth (Beauty) on the Tree of Life. This connection imbues U with the qualities of harmony, sacrifice, and the solar principle, acting as a binding force that unites the microcosm and macrocosm.

Position on the Tree of Life

U occupies Path 16, which connects the sephiroth Chokmah (Wisdom) and Binah (Understanding). This path is attributed to the Tarot trump The Hierophant, symbolizing the transmission of esoteric knowledge and the revelation of divine law. The path's position bridges the dynamic, creative force of Chokmah with the receptive, structuring power of Binah, making U a conduit for formalized spiritual instruction.

Astrological and Planetary Correspondence

Through its link to Tiphareth, U is associated with the Sun, the source of life and illumination. This solar attribution reinforces the letter's role as a harmonizing principle, bringing clarity and vitality to the processes of initiation and understanding. The Sun's influence also connects U to the concept of the 'Child' in the alchemical trinity, representing the perfected result of spiritual work.

Historical Context

The letter U has a complex history in the development of the English alphabet. Originally, the Latin alphabet used the letter V to represent both the consonant /v/ and the vowel /u/. It was not until the early modern period that the two sounds were distinguished, with U becoming the dedicated vowel form. In the context of the Hermetic Order of the Golden Dawn, the English Qabalah was developed as a system for assigning numerical values to English letters, drawing on the principles of the Hebrew Qabalah. The value of 6 for U was established by mapping the English alphabet to the Hebrew one, with U corresponding to Vau, the sixth Hebrew letter. This system was later codified in Aleister Crowley's Liber 777, where the letter U appears in the column for the English equivalent of the Hebrew letters, specifically at the row for Path 16.

In the broader Western esoteric tradition, the letter U (as Vau) is central to the Tetragrammaton (YHVH), where it represents the Son, the active principle of redemption and the link between the Father (Yod) and the Mother (Heh). This role as a connector is echoed in the letter's meaning as a 'hook' or 'nail,' binding together the divine names and the sephiroth.

In Liber 777

In the table of Liber 777, at the row for Path 16 (the English equivalent of Col. LI), the letter U is listed as the English equivalent of the Hebrew letter Vau. This placement confirms its role as a key element in the Qabalistic alphabet, linking the English system to the Hebrew one and providing a foundation for further correspondences in the book.