Can when anyone prove to me truthfully that Nicholas Flamel is or isn't still alive?

Tomb robbers once want to get his gold from his grave, but nothing was in his tomb but rocks...no body. Later after he "died" a book was publish in his name. And people have seen him, supposedly. He spent countless years doing alchemy... studing the philosiphers stone and the book of Abraham the Mage... but... I hate to say it, but no one really knows. It really depends on what you believe. Do you believe in magic? Do believe that people weren't lying about sightings? Do you believe immortality can last 750 years? Do you believe secrets that big can be kept secrets for so long? The key to immortality is immagination...use it wisely