My soul, My heart, My mind

My soul, an interesting thought
In everything it cannot be bought
It, like a lot, does not exist
Oh, what a worldly, evil twist
But, if I, truly, have one
Life after death won't be fun

My heart, left there is an empty void
Even without it, I'm certainly no droid
Black, as always, since the very start
Somewhere, don't know when, we did part
Emotions left and is for the weak
Hopefully, there will be no murder streak

My mind, my true friend
But, as good things, will end
Smoke filled and darkness ruled
Intelligence, not easily fooled
But it's as sharp as a knife
And I'll use it till the end of my life