There are several themes that the speech presents. However, one of the most important ones is the theme of hope. In this speech, the author talks about the hopes and dreams that he harbors when it comes to the future of the United States. He talks about the need for Americans to be united, and the importance of bringing people together as a group. He also talks about a country that accepts him, his family, and other African Americans as equal. All of these ideas support the theme of hope.