Final answer:
The sentence uses "repetition", a rhetorical device, to emphasize the absence of peace by reiterating the word 'Peace.' Repetition aids in linking themes and adding rhythm to literature and speeches. It is different from rhetorical questions and anaphora, which serve other purposes in the text.
Step-by-step explanation:
The sentence "Gentlemen may cry, Peace, Peace-but there is no peace" illustrates the use of repetition. Repetition is a powerful rhetorical device used throughout various forms of text to emphasize a point or theme. In this case, the word 'Peace' is repeated to stress the idea that despite calls for peace, it is not present. This technique differs from other rhetorical strategies such as rhetorical questions, which are not meant to be answered, or anaphora, which involves repeating a grammatical structure for effect.
We often find that repeated words and ideas are used in literature and speeches to establish a connection between themes or to create a pleasing rhythm. This can be seen extensively in the use of refrains in prose, poetry, and speeches. An example of this is Martin Luther King Jr.'s repetition of "I Have a Dream" to reinforce his vision throughout his famous speech.