Nostradamus' writings have frequently been misquoted and, in some instances, even deliberately altered in order to "prove" that he supposedly predicted various events. Since the advent of the Internet, many prophecies have even been fabricated outright, therefore enhancing the mystique of Nostradamus. For example, after the September 11 Terrorist Attacks, the following was circulated on the Internet along with many more elaborate variants:
In the City of God there will be a great thunder,
Two brothers torn apart by Chaos,
while the fortress endures,
the great leader will succumb,
The third big war will begin when the big city is burning
As it turns out, the first four lines were indeed written before the attacks, but by a Canadian graduate student named Neil Marshall as part of a research paper in 1997. Ironically enough, the research paper included this poem as an illustrative example of how the validity of prophecies are often exaggerated. For example, the "City of God" (why is New York City the City of God?), "great thunder" (could apply to just about any disaster), "Two brothers" (lots of things come in pairs), and "the great leader will succumb" phrases are so ambiguous as to be meaningless. The fifth line was added by an anonymous Internet user, showing obvious alteration since Nostradamus wrote his Propheties in four-line verses called quatrains. Nostradamus also never actually referred to a "third big war".