In the long, sleepless watches of the night,
A gentle face -- the face of one long dead --
Looks at me from the wall, where round its head
The night-lamp casts a halo of pale light.
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I love this sad poem, it really reflects the love of the poet for his dead wife, whom he will remember and love forever.
Death of a near one is always painful. When it relates to the better half the sadness is more and here the poet writes the poem in extreme sadness and it is great.