First of all, thanks fot all your help and time.

Are the following sentences grammatically correct?

"But if it's not an invention! Chuck, you have to help me decipher the message, the spirit said something I could not understand at the time it happened nor now, it was, something like "You must, find it, to continue with your life." What can it be? I've been thinking it over and over, and I honestly do not know what I have to find."


Nikitus"But if it's not an invention!

That's a sentence fragment. Do you care?

Yes, that part is a fragment. But after that there are sentences.