Talmud Eser Sefirot, Part 2, Item 1: This Kav [line] is like one thin Tzinor [tube], where the waters of the Ohr Elyon [upper Light] of Ein Sof [Infinity] expand and Nimshachim (extend) to the Olamot [worlds] in that place of Halal [space] and Avir [air].
All of the work takes place inside of the same will to enjoy which sometimes imagines itself full of Light and sometimes – empty. It’s similar to what sometimes happens to us when we seem to have everything, but feel as if we don’t have anything.
The true state does not change – the will to enjoy is entirely filled with Light and is in the world of Infinity. All the changes exist only in creation’s perception. Its desire continually changes and it imagines that it doesn’t have anything, whereas at other times it imagines that it has everything. Sometimes it wants to receive and sometimes – to bestow. Different forms clothe into the matter and they are determined by creation depending on its impression of the Light.
More accurately, it’s not the creation that determines it, but the Light that becomes absorbed into creation more and more deeply, evoking all sorts of sensations in it. But everything occurs in the will to enjoy. It feels empty, remaining after the restriction in the world of Infinity.
Now it wants to behave differently and in this common desire, called Malchut of the world of Infinity, it wants to reveal desires that act purposefully and are called “a line, a tube” – meaning, bestowal aimed at the Host. From all of my desires, I choose those I can aim at Him, and I use them.
I receive into them, but for the sake of bestowing to the Host. In all my other desires I am incapable of bestowing to Him. They are too great and their taste is overly intense. I don’t have the strength to receive into them and at the same time to think about the Host, to bestow to Him.
That is, into this tube enter the weakest desires and the weakest Lights that I can give to the Host. All the rest of the infinite emptiness remaining around this tube are my great desires and great tastes that I am unable to receive for the sake of bestowal. This entire Infinity remains outside of this line.
And everything happens inside of the same desire, the same creation that works on itself in this way, becoming more perfect and developed, revealing more and more qualities, tastes, Lights, and elements inside itself and qualitatively changing.
From the 3rd part of the Daily Kabbalah Lesson 7/26/11, Talmud Eser Sefirot