Sternly, maybe could just be grim ( formiadable, harsh, uninviting, depressing, lack of humor, etc)
As the title of the play informs us, the glass menagerie, or collection of animals, is the play’s central symbol. Laura’s collection of glass animal figurines represents a number of facets of her personality. Like the figurines, Laura is delicate, fanciful, and somehow old-fashioned. Glass is transparent, but, when light is shined upon it correctly, it refracts an entire rainbow of colors. Similarly, Laura, though quiet and bland around strangers, is a source of strange, multifaceted delight to those who choose to look at her in the right light. The menagerie also represents the imaginative world to which Laura devotes herself—a world that is colorful and enticing but based on fragile illusions.
It is the loss of the beloved's innocence symbolized by the flea because <span>later in that stanza, the beloved is obviously represented by the flea. Also the theme of the poem is sex and virtue, the loss of innocence is key.
Hope this helps!
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Summary:
This story can be summarized as a mystical tale about the reincarnation of a deceased soul who takes on a living form and assists a birth in another "living form".