OK, Alice, I found

“Farewell! - but whenever you welcome the hour,
That awakens the night-song of mirth in your bower,
Then think of the friend who once welcomed it too,
And forgot his own griefs to be happy with you.”

-and-

Long, long be my heart with such memories fill'd!
Like the vase in which roses have once been distill'd:
You may break, you may shatter the vase if you will,
But the scent of the roses will hang round it still.

-Thomas Moore, Farewell! But Whenever

That's all I could find on the Web. Did you offer to post the lyrics and tune for us?
Hmmmm?
-Joe Offer-