I was wondering if any of you could give me insight to mania and the grandiosity that comes with it? 

Does the grandiosity have to be delusional for it to be mania and not hypomania? (Eg believing that you will be the next president or ending world hunger) Or can mania be a strong sense of self importance with out the delusions?

I know this may be a silly question but any insight would be great! 

Thanks