Simile: an example of figurative language in which a comparison is made between two different things using "like" or "as."
Equality 7-2521 uses similes to describe The Golden One. Given that he perceives her as "not like the others," he must resort to methods of description that go beyond the normal prescriptions of grammar common to his society's way of speaking. Note that the very language of Equality's society is representative of their collectivist culture which has outlawed individualism. Thus, when he waxes poetic, with metaphor and simile, he is attempting to be more of an individual and thereby to describe The Golden One as an individual - which she must be, set apart, since she is "not like the others."
And the drops of water falling from their hands, as they raised the water to their lips, were like sparks of fire in the sun.
The drops of water, falling from the Golden One's hands, sparkle like the sun, like "gold." Everything about her shines - from his perspective. Thus, she stands out from the others, brighter. His awakening of himself as an individual is complemented by his awakening of The Golden One as an individual as well.
Equality describes his light:
Only the glass box in our arms is like a living heart that gives us strength.
Equality uses a simile to describe the glass box (the light) he created. Note the continuing use of light imagery - with the light itself (glass box) and The Golden One. The image of light suggests an "enlightenment," and/or an "illumination" in the senses of clarifying and explaining. The energy of the glass box is compared to a heart: to life itself.
Again, Equality uses similes to describe The Golden One, still with images of light:
The skin of their arms is like a blue mist, but their shoulders are white and glowing, as if the light fell not from above, but rose from under their skin. We watch the leaf which has fallen upon their shoulder, and it lies at the curve of their neck, and a drop of dew glistens upon it like a jewel.