In the quote below from "Romeo and Juliet," what literary devices are used, symbolism, metaphors, personification?“But soft, what light through...

This is one of the most well-known quotes in all of Romeo
and Juliet.  In this quote you can find all three of the literary devices mentioned:
symbolism, metaphors, and personification.  To understand which devices are used, you
need to first understand the meaning of each literary
device.

A metaphor is a figure of speech that constructs an
analogy between two things or ideas; it is a comparison made without using the
words, like or
as. 

Personification is a type of
metaphor in which a thing or abstraction is represented as a
person.

A symbol, as it relates to literature, is an
object, picture, written word, sound or particular mark that represents something else
by association, resemblance, or
convention. 

Metaphor: In the
famous quote above, Shakespeare writes, "Juliet is the sun."  Juliet is being compared
to the sun here without using the words like or
as, so that is a
metaphor.

Personification:
When Shakespeare writes, "Arise, fair sun, and kill the envious moon," he is using
personification.  The sun cannot actually perform the act of killing.  This phrase gives
the sun human
characteristics.

Symbolism:
Throughout the play, images of light and dark are used many times; the light symbolizes
love, beauty, all that is good.  The darkness represents depression, death, all that
is bad or evil.  In this quote, Shakespeare uses the symbol of light to represent beauty
and love; in this case Juliet.