author
Jacques Loeb
1859–1924
A pioneering experimental biologist, he became famous for showing that life processes could be studied with the tools of chemistry and physics. His bold work on animal behavior, regeneration, and artificial parthenogenesis helped reshape modern biology.
1 Audiobook
The Organism as a Whole, from a Physicochemical Viewpoint
by Jacques Loeb
About the author
Born in Mayen, Germany, in 1859, Jacques Loeb studied medicine at the University of Strasbourg and then moved into research in physiology and biology. He taught and worked in Europe before emigrating to the United States in the 1890s, where he held positions at Bryn Mawr, the University of Chicago, the University of California, and later the Rockefeller Institute.
Loeb is remembered above all for his experimental approach. He investigated tropisms, regeneration, and the chemical basis of development, and he became especially well known for inducing artificial parthenogenesis in sea urchin eggs. His work reflected a strongly mechanistic view of life: he argued that living processes could be explained through physical and chemical laws rather than vital forces.
Beyond his laboratory discoveries, Loeb was one of the most influential biological thinkers of his era. His writing helped popularize a new style of biology grounded in controlled experiment, and his career left a lasting mark on physiology, developmental biology, and biochemistry before his death in 1924.