AIN
There are three qabalistical veils of the negative existence, and in themselves they formulate the hidden ideas of the Sephiroth not yet called into being, and they are concentrated in Kether, which in this sense is the Malkuth of hidden ideas of the Sephiroth.
The first veil of the negative existence is the AIN, Ain, Negativity. This word consists of three letters, which thus shadow forth the first three Sephiroth or numbers.
The second veil is the AIN SVP, Ain Soph, the limitless. This title consists of six letters, and shadows forth the idea of the first six Sephiroth or numbers.
The third veil is the AIN SVP AVR, Ain Soph Aur, the Limitless Light. This again consists of nine letters, and suymbolises the first nine Sephiroth, but of course in their hidden idea only. But when we reach the number nine we cannot progress farther without returning to the unity, or the number one, for the number ten is but a repetition of unity freshly derived from the negative, as is evident from a glance at its ordinary representation in Arabic numerals, where the circle O represents the Negative and the I the Unity. Thus, then, the limitless ocean of negative light does not proceed from a centre, for it is centreless, but it concentrates a centre, which is the number one of of the Sephiroth, Kether, the Crown, the First Sephira; which therefore may be said to be the Malkuth or the number ten of the hidden Sephiroth. Thus “Kether is in Malkuth and Malkuth is in Kether.”