What arguments did Alfred North Whitehead make in The Concept of Nature?

In The Concept of Nature (1920), Alfred North Whitehead sought to establish a philosophical foundation for physics based on the general character of human perception of the external world.1

Key arguments and themes in the work include:

• Rejection of Traditional Views: Whitehead rejected idealistic interpretations of the relationship between nature and the mind, while also distancing himself from the realist school of thought associated with Bertrand Russell and G.E. Moore.1
• Events as Fundamental: He argued that events are the basic components of nature, rather than static entities.1
• Creative Advance: He posited that "passage," or creative advance, is the most fundamental feature of nature, a doctrine influenced by Henri Bergson’s antimechanistic philosophy of change.1
• Ingression of Forms: Reflecting a Platonist influence, he argued that the definite character of events arises from the "ingression" of timeless entities, foreshadowing his later metaphysics.1