If I forget thee! How shall I forget thee?
Sword of the mighty! Prince and Lord of War!
Captive I bind me
To the spears that blind me,
Rage in my heart and love for evermore.

If I forget thee! How shall I forget thee?
Man the destroyer! Life that made mine move!
They that come after
Let them earn my laughter,
Ay, but my anger, never, nor my love.

If I forget thee! How should I forget thee?
One man there is no woman dares despise.
Hate him it may be,
Wound him if the way be,
Nay, but forget him? Not before she dies!

Wilfrid Scawen Blunt

http://www.poemhunter.com/poem/if-i-forget-thee/