Below, you will find an assortment of texts exploring Philosophy, Anticosmic Satanism, Chaos Gnosticism, and Gnostic thought in general. Each text listed here is relevant to and influential toward our Order's understanding of and approach toward Chaos.
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Philosophy:‍
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The Philosophy of Redemption by Philipp Mainländer
This text is a foundational influence on our approach to living and operating within the Cosmos as it moves toward its inevitable dissolution. It provides a philosophical guide to morality within anticosmism.

Dialectical & Historical Materialism by Joseph Stalin
The Cosmos is something that we can only fight, manipulate, and overcome by operating within the limitations that it is bound by. Dialectical & Historical Materialism provides a verified and repeatable approach to doing so.
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Anticosmic Satanism/Chaos Gnosticism:‍
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The Book of Sitra Achra by N.A-A.218
This is a full grimoire of the Sitra Achra and cosmology of Anticosmic Satanism.
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Liber Falxifer 1-3 by N.A-A.218
This series of grimoires covers the necrosophic current of Anticosmic Satanism focusing on the Cult of Qayin.
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Panparadox by Ekortu
This text explores Chaos Gnosticism through the god Pan.

Black Flame by Tau To Naas
This is a very solid overview of Chaos Gnosticism/Anticosmic Satanism as an overarching concept, though fairly short.
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TOTBL 218
This is a compilation document of the articles and teachings from the Temple of the Black Light's website prior to it going offline. It can still be found online as a PDF under the name TOTBL 218.
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Þursatrú/Thursatru:

Þursakyngi I The Essence of Thursian Sorcery by Ekortu
This is an introduction and overview of the Thursian tradition
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Þursakyngi II Loki by Ekortu
This text explores Loki within the Thursian tradition
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Þursakyngi III Gullveigarbók by Ekortu
This text explores Gullveig, but also includes a very solid explanation of the Thursian current as a whole.
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Myrkþursablót: Nightside of the Old Norse Mythology by Hrímhjarta
While not technically Thursatru, this is a fantastic text within a very similar current.
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Gnosticism In General:

The Nag Hammadi Scriptures
The best source for ancient Gnostic theology, as it's pretty much all we have left from that era. You'll find texts from various gnostic viewpoints within it.
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Brotherhood of the Serpent by Tau To Naas
This is a solid text covering Ophite Gnosticism and the Ophite Diagram.