Can I use this quote in my conclusion?

So im writing an essay about a picture that shows violence vs. peace. I should write about how it holds its realities. Can i use the following quote i

So i'm writing an essay about a picture that shows violence vs. peace. I should write about how it holds its realities. Can i use the following quote in my conclusion?? "I don't agree with what you have to say but i'll fight till death your right to say it"
Thanks

or:So i'm writing an essay about a picture that shows violence vs. peace. I should write about how it holds its realities. Can i use the following quote in my conclusion?? \"I don't agree with what you have to say but i'll fight till death your right to say it\"Thanks

or:Not really as the quote would be inappropriate in the context of the essay. That quote is more about civil liberties rather than violence vs peace.

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