The Bible
Most rectconned book of all times. Rewritten several times and redacted according to prevalent dogma / papal edicts. The older part was about removing kebabs, chosen people being strong for their tribe and relentless hailing of genocide, with some rape throw in. Also possibly written at the time when human consciousness underwent deep remodeling, though that is evidently debatable.
Flaming Bush icon, of course.
P.S. "A Brief History of Time" on 3rd place? Utterly Ridiculous.
Biting the hand that feeds IT
