Until she won the Nobel Prize, Pearl Buck released very little biographical information about herself, mainly to protect her mentally disabled daughter Carol from prying eyes. Even Pearl's autobiography, My Several Worlds, published when she was 62 years old, revealed relatively little intimate information. In the course of nearly 400 pages, Pearl does not mention either of her husbands or her parents. She does, however, provide a detailed account of her life as the parent of a disabled child. Her candor became a legendary first step towards new tolerance for families caring for children with disabilities.