User blog comment:Masterreaper/What is the Treasure of One Piece?/@comment-27169256-20140616144814

There's actually an in depth theory that's been posted awhile back explaining pretty much what One Piece could quite literally be but I won't post it.

I personally believe it is something the World Government fears, such as a weapon (Like the Three Anicent Weapons) that could change the world and destroy the "system" the WG uses, which is why Gold Roger went after it.