The dead are under the rule of Osiris, the lord of the dead. As such they believe they are nothing more than the four elements that are subject to continual transformation (Death) from one form into another. This is what we mistakenly call life.
From within the limited perspective of the four elements we can readily agree with the Buddha's assertion that all is Dukkha - sorrow, pain, suffering.
But not according to Hadit the Lord of Life.
Remember all ye that existence is pure joy; that all the sorrows are but as shadows; they pass & are done; but there is that which remains.
Each one of us is the Hanged Man. (Mem - Water the element of illusion) Through the process of incarnation we are plunged head first into the world of the four elements. Into a world of illusion that convinces us that this is all that there is. But at the same time we lose sight of our True Self, the 5th element - Spirit, even though we are always connected to it. (The Ankh - symbol of Life) We are spiritual beings inhabiting temporary bodies of flesh.
The symbol the Hanged Man is making with his body is the Cross above the Triangle. This is supposed to represent the descent of spirit into matter. But what if you could re-connect with your True Self and somehow set the triangle above the cross. (This would create the alchemical symbol for Sulphur.) Wouldn't this transform your whole view of earthly life and it's meaning?
But you can't do that while you're still a
slave to the four elements. You must become a Lord of the Earth (four elements) to wear the crown of spirit.
Atu XII The Hanged Man - Mem (spelt in full) is 90 (Cross above the Triangle) The Slave.
Atu IV The Emperor - Tzaddi 90 (The Triangle above the Cross.) The King whose throne is the cubic stone.
If you look through Liber Legis you'll notice that nearly every single reference to the "King & slave" appears in chapter 2. This makes some people uncomfortable because of the elitist theme. My answer: Thelema is elitist. And if you don't like it, tough!
Everyone thinks they are entitled to be King (the euphamism for Adept in Liber Legis). But how many are prepared to do the work necessary to become a Lord of Earth?
At this point it might be helpful to introduce one of my favourite Thelemic Holy books, Liber Tzaddi.
http://www.rahoorkhuit.net/library/libers/pdf/lib_0090.pdf