Why this word is great
THEOMANIA — [Noun] A delusional psychosis in which the afflicted suffer the fixed conviction of being a deity or divinely inhabited. From the combining form theo- (from Greek theos, meaning "god") + -mania (from Greek mania, meaning "madness, frenzy"). Unlike a "delusion of grandeur," which may settle for secular royalty or genius, or "religious ecstasy," a temporary, communally sanctioned rapture, theomania is a solitary, crushing apotheosis. It is the sun-bleached prophet shouting scripture at indifferent traffic, the quiet accountant drafting new commandments on office stationery, the sleepless patient receiving celestial instructions through the static of a dead television channel—the ultimate solitude of believing oneself the author of everything, and finding no one has read the book.