What part in my brother paul reflects dreiser's desire for acceptance?

 As I look back now on my life, I realize quite clearly that of all the members of my family, subsequent to my mother's death, the only one who truly understood me, or, better yet, sympathized with my intellectual and artistic point of view, was, strange as it may seem, this same Paul, my dearest brother."

Hope this helps!

Happy new year to you too!