Is it possible for humans to live in a perfect world?

The problem is, there are crazy people out there. There are also narrowminded people. Let's say the world was perfect (our definition.) There are bound to be a small amount that grows sick of that sort of lifestyle, and what is perfect exactly? I mean we all have a similar concept but when it comes to details, a lot changes. That is where our differences cut the line of peace. Like someone once said, if life was perfect, we'd all be the same.