I want to say something but I can't find it

I want to find something but someone has hide it

I want to hide something but my mind can't deny it

Where is it? I wonder

Will I find it before I am Earth-under

Or will it someday come with a flash of thunder

To tear all my doubts asunder

To claim and proclaim forever

That this is the why, the how, the full answer

That it is not a lie

And it doesn't leave a chance 

For my mind to deny