Dubos, a French-born microbiologist, spent most of his career as a researcher and teacher at Rockefeller University in New York state. His pioneering work in microbiology, such as isolating the anti-bacterial substance gramicidin from a soil organism and showing the feasibility of obtaining germ-fighting drugs from microbes, led to the development of antibiotics.

Nevertheless, most people know Dubos as a writer. Dubos's books centered on how humans relate to their surroundings, books informed by what he described as "the main intellectual attitude that has governed all aspects of my professional life...to study things, from microbes to man, not per se but in their complex relationships." That pervasive intellectual stance, carried throughout his research and writing, reflected what Saturday Review called "one of the best-formed and...