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Fritz Haber developed Germany's poison gas program during World War I and supervised the first use of chlorine gas on the Western Front. Photo courtesy of Archiv der Max-Planck-Gesellschaft, Berlin-Dahlem.
DR: I heard about Haber in 2001 or early 2002. I saw a Discovery Channel special on him and immediately became obsessed. One of the things I love about the story is its massive historical sweep. It’s about the invention of weapons of mass destruction, the power of science, and the world at an incredible crossroads, but it’s also a personal and intimate story about Haber as a human being and his relationship with his wife.
DR: One of the huge challenges I faced was that I had only 34 minutes. In the end I decided to focus on one moment in time, when he confronted the dilemma about chemical weapons. I was fascinated by the power that science has—the way that scientists can be called upon to produce that power at times of incredible need and how that power can be used and sometimes abused. At the time, most Germans saw themselves in a fight for their survival; so when Haber had the opportunity to help the war effort through the use of poison gas, he saw it as an opportunity to save his country and his fellow men. The Haber-Bosch process produced fertilizer that helped to feed the world—so I was fascinated by a man who had done these wonderful things, yet was then willing to create a weapon for the good of his country. One of my objectives was not to make any judgments about Haber, but to explore the situation and his decision and let the viewers judge what they thought the right and wrong of it was.
DR: Nuances about Haber’s decision, the time period, and more details about his wife, Clara. I’m working on a feature-film version, so I will have the opportunity to include these then. In the feature version a major supporting character is Einstein, who was a friend of Haber’s. Also I’ll include more of his relationship with Clara, which is the emotional part of the story where you see and feel the impact of Haber’s decisions. There’s no conclusive evidence as to exactly why she killed herself. She committed suicide the night before Haber was due to leave for the Russian front, and she did it in the garden—part of the Kaiser Wilhelm Institute—a fairly public place. The combination of Clara’s suicide, its location, and its timing point to the fact that she was terribly opposed to what Haber was doing and killed herself in protest. But there were other grave problems in their marriage as well. When they married, she was one of the first women in Germany to get a Ph.D. in chemistry. Haber proposed, and she accepted, the idea that they would have a dual career. His career quickly took off, but they had a son and not a lot of money and no servants, so her career came to a halt. It was terribly upsetting to her.
What struck me about Haber is that he thought in big historical terms, in big actions. He made decisions with big consequences and wasn’t always sensitive to the personal and human side of things. He could make a decision like inventing chemical weapons to save Germany, end the war, and save millions of lives without looking at the personal ramifications of the people getting gassed and the implications for his own life. Clara is a foil in that sense—someone who is rooted in the personal and tries to remind him of those concerns.
Bakelite, 20th century
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