SANJEEV BHASKAR: In the early part of the 20th century, Helen Keller was one of the most famous women in the world. She was an author, she was an Oscar winner, and she had the ear of presidents ...

Here, Dorothy Herrmann, author of Helen Keller: A Life, tells us about the writer and activist’s passion for philosophy, love of Walt Whitman, and devotion to the work of a Swedish theologian.