Essays and documents related to Hideous Gnosis, a symposium on black metal theory, which took place on December 12, 2009 in Brooklyn, NY. Expanded and Revised."Life is a hideous thing, and from the background behind what we know of it peer daemoniacal hints of truth which make it sometimes a thousandfold more hideous." - H.P. Lovecraft"Poison yourself . . . with thought" - ArizmendaCONTENTS: Steven Shakespeare, "The Light that Illuminates Itself, the Dark that Soils Itself: Blackened Notes from Schelling's Underground." Erik Butler, "The Counter-Reformation in Stone and Metal: Spiritual Substances." Scott Wilson, "BAsileus philosoPHOrum METaloricum." Hunter Hunt-Hendrix, "Transcendental Black Metal." Nicola Masciandaro, "Anti-Cosmosis: Black Mahapralaya." Joseph Russo, "Perpetue Putesco - Perpetually I Putrefy." Benjamin Noys, "'Remain True to the Earth!': Remarks on the Politics of Black Metal." Evan Calder Williams, "The Headless Horsemen of the Apocalypse." Brandon Stosuy, "Meaningful Leaning Mess." Aspasia Stephanou, "Playing Wolves and Red Riding Hoods in Black Metal." Anthony Sciscione, "'Goatsteps Behind My Steps . . .': Black Metal and Ritual Renewal." Eugene Thacker, "Three Questions on Demonology." Niall Scott, "Black Confessions and Absu-lution." DOCUMENTS: Lionel Maunz, Pineal Eye; Oyku Tekten, Symposium Photographs; Scott Wilson, "Pop Journalism and the Passion for Ignorance"; Karlynn Holland, Sin Eater I-V; Nicola Masciandaro and Reza Negarestani, Black Metal Commentary; Black Metal Theory Blog Comments; Letter from Andrew White; E.S.S.E, Murder Devour I.HTTP://BLACKMETALTHEORY.BLOGSPOT.COM