* Jonah's journey: He's a young boy who has been living a secret life, hidden away from the world and his own past. He doesn't know who he is or where he came from, and his entire existence revolves around surviving and staying hidden. His yearning for a sense of belonging and a family drives his actions.
* The "found" children: All the children in the book are searching for their place in the world. They have been taken from their families and placed in foster care or other institutions, making them feel lost and disconnected. Their desire to be "found" represents a longing for a connection and a sense of identity.
* The society: The novel criticizes the societal structures that create these problems. The lack of resources and support for children in need, the emphasis on control and secrecy, and the systemic issues that contribute to the separation of families all contribute to the theme of searching for belonging.
* The power of family and connection: Throughout the story, the importance of family and connection is highlighted. Jonah finds solace and strength in the relationships he forms with other "found" children, even as they struggle with their own individual journeys. The search for belonging and the desire for family become the driving forces that lead the children to uncover the truth about their past.
Overall, "Found" encourages readers to reflect on the importance of identity, family, and the complex systems that shape our lives. It explores the universal human need to belong and the search for our place in the world.