Michael Robartes and the Dancer William Butler Yeats

He. Opinion is not worth a rush;
In this altar-piece the knight,
Who grips his long spear so to push
That dragon through the fading light,
Loved the lady; and it's plain
The half-dead dragon was her thought,
That every morning rose again
And dug its claws and shrieked and fought.
Could the impossible come to pass
She would have time to turn her eyes,
Her lover thought, upon the glass
And on the instant would grow wise.

She. You mean they argued.

He. Put it so;
But bear in mind your lover's wage
Is what your looking-glass can show,
And that he will turn green with rage
At all that is not pictured there.

She. May I not put myself to college?

He. Go pluck Athena by the hair;
For what mere book can grant a knowledge
With an impassioned gravity
Appropriate to that beating breast,
That vigorous thigh, that dreaming eye?
And may the devil take the rest.