The only way it would be wrong/illegal is if you didn't give the book credit. If you posted the excerpt from the book and said you wrote it or said (By: Me) then that would be considered plagiarism. If you don't want to post what book it is from, then just put the excerpt in quotations.
I see people do it all of the time on facebook statuses but its a good idea to write in your paragraph the person who came up with the inspirational quotes just to give them credit.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.