"There's a lot of Sacred Geometry in the artbook. Notice the flaming eyes? These are called Chakaras, energy vortexes on the body. Next is the circle of eyes. I think this is a representation of the "Golden Mean Spiral" aka "The Spiral of love". The Fibonacci Sequence can help you to better understand it and also sacred geometry. The vertical tube is called the prana channel. Our soul breaths a substance called "prana". The channel meets in one of the chakras. The chakra in which the prana meets depends on where you are mentally, emotionally, and dimensionally "tuned." The Prana then connects with the cystalline grid around the body (the star tetrahedron inscribed in a sphere behind the man). He is also glowing. This could be the Merkaba, The vehicle of ascension. It could also be some kind of aura.
There is also an image that resembles a cross on the backside of the cover. This is called a Dorje. Symbolically a dorje represents the "thunderbolt of enlightenment", that abrupt change in human consciousness which is recognised by all the great religions as a pivotal episode in the lives of mystics and saints. I also find it interesting that on the one before last page there is the word GOD written in the dissected man's brain. Is this a message? Possibly that god is just something we tell ourselves is real to attain a grasp on life, or that god is inside of us all, but we just need to "wake up" and find him/her."
All of the above information was taken from AEstheticTruth.com, an excellent site on Sacred Geometry and other TooL related mysticism.
Consequences dictate our course of action. It doesn't matter what's right, it's only wrong if you get caught. If consequences dictate my course of action, I should play god and just shoot you myself.-TooL, "Jerk-Off", Opiate