Love is a universal migraine,
A bright stain on the vision
Blotting out reason.
Symptoms of true love
Are leanness, jealousy,
Laggard dawns;
Are omens and nightmares –
Listening for a knock,
Waiting for a sign:
For a touch of her fingers
In a darkened room,
For a searching look.
Take courage, lover!
Could you endure such grief
At any hand but hers?
– Robert Graves (1895-1985)