A metaphor is used in the following quote 'The house was all as still as death.'
The literary term used in the quote "the house was all as still as death" is simile. This is because it directly compares the stillness of the house to death using the word "as". The simile helps create a vivid image in the reader's mind.
Voltaire
This quote uses paradox, a literary device that combines contradictory ideas in a way that creates a sense of tension or mystery. The phrase "slept but did not sleep" and "lived but did not live" suggests that the Mechanical hound has a complex and mysterious existence.
This quote is "foreshadowing" the death of Romeo.
If the person you quote is someone with credible background on the issue you are discussing it it a call to authority. If it is a quote from a character or other figure, it is an allusion.
It is a paradox!
SIR WALTER RALEIGH As before he ended his pamphlet with a splendid literary flourish, to prove his patriotism and loyalty: `The wings of man's life are plumedwith the feathers of Death."' From entering the quote at Amazon.com--- DAH
Metaphor, I think.
simile
It depends on the quote.
The literary term found in this quote is "personification," which is the attribution of human traits or emotions to non-human entities. In this case, "the angry spot" is given the human emotion of anger.
Rhetorical device or literary element or literary technique?
alliteration