Which Is You? Poem by Mark Heathcote

You know I don't know how to control my mercury.
It rises and falls.
With angels and the devil of sin
You know I don't know how to control my mercury.
It rises and falls.
With every swan or vixen, I meet on the road
You know I don't know how to control my mercury.
It rises and falls.
Like a cherry blossom or a hailstone
You know I don't know how to control my mercury.
It rises and falls.
Like a nightingale or a vulgar miner bird
You know I don't know how to control my mercury.
It rises and falls.
Like a violin or a banjo
You know I don't know how to control my mercury.
It rises and falls.
To heaven and hell
It rises for you.
My only question now is: which is you?