I am looking to write an essay for my honors class, and our teacher has instructed us

"to read two inspirational* books and to write a brief summary/essay on said books and to present it to the class. The essay must include two books, and a central idea between them."
* Inspirational does not have to be determined by me, as longs as it is to you


So, i know standard books like
*a child called it
* "Be The Best You Can Be" type of books...like, the ones by random authors.

I guess what im looking for is books that have deep meaning behind them:
I was thinking along the lines of books such as "Animal Farm" and "On The Beach"


Any suggestions, and if possible, can you explain why?