Next week Hillary Clinton will release “Hard Choices,” a memoir of her years as secretary of state. The book is Clinton’s first since Living History, a memoir of her childhood, Ivy League education, marriage to Bill Clinton and time as first lady.

So: Clinton’s first book covered the period from her birth in 1947 through 2001. Her second book covers 2009 through 2013. What about the eight years in between, from 2001 to 2009? That was the time Clinton served as a U.S. senator, and it is the only part of her life she has not seen fit to write a book about.