The question asks about a poem, but the source passages provided do not include a poem that treats grief as temporary. The closest relevant passage is Tagore's extract:
> "Say not in grief that she is no more / but say in thankfulness that she was. / A death is not the extinguishing of a light, / but the putting out of the lamp because the dawn has come."
I will base my answer on this.
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In the extract by Tagore, the poet considers grief as temporary by shifting the focus from loss to gratitude. He urges us not to mourn the death of a loved one but to be thankful that the person lived. The image of a lamp being put out not because the light has ended, but because the dawn has come, suggests that death is a natural transition, not a permanent darkness. This implies that grief, like night, gives way to a brighter perspective — thankfulness and acceptance — making sorrow a passing phase rather than a permanent state.
Source: Extended Reading, Chapter 8
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