Fresh Air with Terry Gross

This interview was originally broadcast on August 11, 2011. To End All Wars is now available in paperback.

The human cost of World War I was enormous. More than 9 million soldiers and an estimated 12 million civilians died in the four-year-long conflict, which also left 21 million military men wounded.

There are many dramas and comedies in which career trajectories take couples to different corners of the country, complicating or ending romantic relationships. There will be many more, at least until someone invents a teleportation machine. What's different about each work is how the problem gets interpreted.

"Difficult" is probably the most tactful word one could use in characterizing Lillian Hellman. If ever there were an author safer to meet through her art rather than in real life, she was the one. Born in New Orleans into a Jewish family, Hellman came of age in the Roaring '20s, liberated by flappers and Freud. Hellman drank like a fish, swore like a sailor and slept around like, well, like most of the men in her literary circle, chief among them Dashiell Hammett, with whom she had an open relationship spanning three decades. She was, recalled one observer, a "tough broad ...