Blume does think that she turned toward children’s fiction because she was still living a relatively sheltered life. “I didn’t have any adult experience when I started to write,” she said. “So I identified more with kids.” Her own fate felt sealed, airless. “I felt, I made this decision. This is it. It’s not all open for me anymore.” To her, it was only natural that she look backward, to the age when she felt most powerful and adulthood still promised the adventures her father wanted for her. She had been a fierce and creative child; on the page, at least, she still was. Blume likes the idea that everybody has an age that defines them for life. For her, she said, that age is 12.
— From a profile of beloved author Judy Blume in The New York Times Magazine.