The Poem Stuck in my Head

Whilst studying for a German test this fine evening, I had a poem stuck in my head.
Do you ever have that?
It's very similar to having a song stuck in your head, only even more annoying because you can't hum or whistle the refrain.
You can only say it.

Ironically enough, I first heard about this particular poem in a movie.
Also ironically, the movie was Must Love Dogs, which I didn't really like because I felt the plot was all over the place, and because I was actually getting annoyed with Diane Lane, lovely actor as she is.

Christopher Plummer was the one who recited the poem in the movie, though, so that makes everything all right. Captain Von Trapp can do no wrong in my book.

Anyway, here's the poem. Enjoy:

"Brown Penny," by William Butler Yeats

I whispered, 'I am too young,'
And then, 'I am old enough';
Wherefore I threw a penny
To find out if I might love.
'Go and love, go and love, young man,
If the lady be young and fair.'
Ah, penny, brown penny, brown penny,
I am looped in the loops of her hair.

O love is the crooked thing,
There is nobody wise enough
To find out all that is in it,
For he would be thinking of love
Till the stars had run away
And the shadows eaten the moon.
Ah, penny, brown penny, brown penny,
One cannot begin it too soon.