Here's the poem, i've been discussing the meaning with friends.
Good-night? ah! no; the hour is ill
Which severs those it should unite;
Let us remain together still,
Then it will be good night.
How can I call the lone night good,
Though thy sweet wishes wing its flight?
Be it not said, thought, understood —
Then it will be--good night.
To hearts which near each other move
From evening close to morning light,
The night is good; because, my love,
They never say good-night.
the line though thy sweet wishes wing its flight? what do you think is the meaning and reference of the verb "wing" here? I thought at first that she wished the lone night to come, to speed up the approach of it, because she said good night in the first place, Shelley rejects this separation and explains that how a night can be good instead. but wing also has another meaning which is to shoot down a bird from its wings. so, if this nights is lone and bad her wishes might want to shoot the approaching night and slow it down. but this second meaning concludes that she wants to stay together, which i do not think is true for this context. poet clearly heard her say goodnight and responded with this poem. anyway, this is my thought, what do you think about this verb? i think its the key to this poem.