Waiting to cross the border

Thousands are still asleep
Dreaming of terrifying monsters,
Or of friendly tea beside the band at Cranston's or Crawford's:
Asleep in working Glasgow, asleep in well-set Edinburgh,
Asleep in granite Aberdeen,
They continue their dreams,
And shall wake soon and long for letters,
And none will hear the postman's knock
Without a quickening of the heart,
For who can bear to feel himself forgotten?