Who'll Punish Time?

At the sound of the gun
The squirrel falls dead
Who will mourn him?
Rain.
But who will punish the gun
At the sound of which
The squirrel falls dead?
Rust.
And who will punish rust
At whose hands
The gun is punished?
Time.
So who will punish time
By whom alone
Rust is scathed?
Nothing - Time is too strong!