Wilhelm Ostwald was a German chemist, philosopher, and historian of science whose main scientific achievement was his pioneer work in physical chemistry, particularly in electrochemistry. With J. H. van't Hoff he founded the Zeitschrift für physikalische Chemie in 1887. He was awarded the Nobel Prize in chemistry in 1909.

Energetism

Ostwald's philosophical outlook, known as energetism or energetic monism, was strongly influenced by his scientific background and by the state of physical science at the end of the nineteenth century. In particular, the first and second laws of thermodynamics—the law of conservation of energy and the law of entropy—decisively influenced his thought. Ostwald claimed that energy is the substrate of all phenomena and that all observable changes can be interpreted as transformations of one kind of energy into another. This claim was based on both epistemological and physical considerations. Ostwald pointed out that...