Stein: Insane?

It's not easy to make yourself stop shaking, is it?
I didn't mean to do this, I swear.
My hands had a mind of their own, honest.
And they were asking for this, weren't they?
They wanted to die, right?
They wouldn't stop whining, no sir.
So I did a good thing, yes?
Yes, that's right.
Now all I need is to get rid of the evidence.
I'm not insane, right?