You can include more than one famous quotes if you want to in your story-it may break your story up into sections with each section related to each other yet related also to the quote, although that might be too complex. You are allowed to include a famous quote to begin a creative if you want, because after all, you are suppose to be 'creative' in creative writing-however you need to make sure that the quote either explicitly explores belonging or has some significant standing in your story that enhances its exploration of the difference facets of belonging. So don't just include it as a part of the plot-you should ideally include it so that the idea explored in the quote are interweaved into the thematic concerns of the story as a whole, and if you like, when you finish your creative piece-feel free to pm me-I will be happy to have a look over it
-hope this helps, by the way