This book feel like it was written so that someone could use it for a book project. don't get me wrong, it is one of my favorite books, but I find myself using in different ways for many book projects. It has several very clear themes. One is Calpurnia's realization that she wants to be different than what is expected of girls in that time period. She also bonds with her grandfather, which shows common ground between generations. Calpurnia is sometimes defiant, but unjustly so. She speaks her mind, especially when I comes to "No fair" and all matters of science. She is hoping to get a copy of Darwin's The Origin of Species, but instead gets The Science of Housewifery. I guess you could consider it a science book, but not the type Calpurnia was hoping for.