That's the Cognitive thingi poem!!! and they say this poem need to think in a bian tai way in order to understand it's meaning. LOLS!!! Then Yanglishan say I gave too much details alr. :p

Oh Rose, thou art sick!
The invisible worm
That flies in the night,
in the howling storm

Has found out thy bed
Of crimson joy.
And with his dark secret love,
does thy life destroy.

-William Blake