It lies not in our power to love or hate,
For will in us is over-rul'd by fate.
hen two are stript long ere the course begin,
We wish that one should lose, the other win;
And one especially do we affect
Of two gold ingots, like in each respect:
The reason no man knows; let it suffice,
What we behold is censur'd by our eyes.
Where both deliberate, the love is slight:
Who ever lov'd, that lov'd not at first sight.

Christopher Marlowe

http://www.poemhunter.com/poem/hero-and-leander/