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Included in a letter from Rita Levi-Montalcini, 1968 Nobel Prize winner in Physiology or Medicine, this brochure outlines twelve principle human duties drafted by outstanding scientists and intellectuals, which include respecting human dignity and diversity, protecting nature, and promoting peace. In the accompanying letter, Levi-Montalcini suggests that Nirenberg's approval and support would be "of invaluable importance in the success of this project."