I've Never Known a Sinner

I've never known a sinner and I doubt I ever will
Although I know of those who lie and those who steal and kill
A cue ball hits another ball, which hits another still
And none of them refuse to move or move of their free will

And so it is with molecules and neurons in the brain
When one will bump another one, the next must do the same
I've never known a sinner in the people I have seen
Because I somehow understand we're in the same machine