Parte 13 · Capítulo 31

And the matter is, that the first head among them is the aspect of Keter, and it has ten Sefirot, as above, and it surrounds the Mocha Stima'ah, and is called the skull [Galgalta] in the Idra. And the word Keter is from the language of crown [Keter], meaning surrounding, for the skull surrounds the brain. And within this skull there is within it the aspect of a very sealed brain, besides the Mocha Stima'ah of AA, which is under the Yod of Keter; therefore this brain is very high and sealed, and is called by the name upper air [Avira Ila'ah], as mentioned in the two Idrot and in Sifra deTzniuta. And this air is between the skull and the membrane that covers the Hochma of the Mocha Stima'ah, and is called in Sifra deTzniuta, in the first chapter, the membrane of the air that was clarified [Kruma deAvira deIzdachech], etc.