* To honor Anne's memory: Otto Frank was deeply affected by the loss of his daughter and wanted to ensure that her story and her voice were not forgotten. He saw the diary as a powerful testament to Anne's spirit, courage, and humanity, even in the face of unimaginable hardship.
* To share her story with the world: Otto Frank believed that Anne's story had the power to teach people about the horrors of the Holocaust and the importance of fighting against prejudice and intolerance. He hoped that by publishing the diary, he could help others understand the human cost of war and the importance of remembering the victims.
* To preserve her legacy: Otto Frank saw the diary as a valuable historical document that could shed light on the experiences of Jews during the Holocaust. He hoped that it would become a resource for future generations to learn about this dark period in history.
* To fulfill Anne's wish: Anne had hoped that her diary would be published one day, believing that it could be a valuable resource for people in the future. Otto Frank wanted to fulfill her wish and allow her story to reach a wider audience.
Publishing the diary was not an easy decision for Otto Frank, as it meant reliving the trauma of his own experiences and sharing the pain of his loss. However, he ultimately felt that it was the right thing to do to honor Anne's memory, teach the world a valuable lesson, and preserve her legacy.