Nostradamus’s predictions tended to be about general types of events, like natural disasters and conflict-related events that tend to occur regularly as time goes on. Some people believe that his prophecies have predicted actual events, such as the death of Henry II, the French Revolution , the rise of Napoleon , the rise of Adolf Hitler , and the 9/11 attacks . Others maintain that because his prophecies tend to be about general types of events that occur frequently throughout history—and are written in a cryptic and vague manner—it’s possible to find one that seems to match almost any event that has occurred.