One probable source of Illuminatus woo-woo-think is probably Illuminatus! by Robert Shea and Robert Anton Wilson. It's a great read, but keep your marbles in a safe place or you'll have a few sleepless nights.

It's like Eco's Foucault's Pendulum but wilder and funnier.

Fnord

I mean, Fred

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"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684