Whitehead begins this book by describing the problems with rationalism and materialism. The first two chapters seem clear enough. Rationalism, with its origns in Greek thought and mathematics and its merger with religion (Christianity), increasingly removed itself from science. The materialist perspective in its turn dug itself into a hole by viewing reality only in terms of atomism, abstraction and determinism. Whitehead's task in this book is to propose an alternative theory that takes the best from both worlds in what he calls his theory of the organism.
Unfortunately, Whitehead's writing in this book becomes increasingly difficult to understand and this presents a challenge in putting together a coherent picture of his alternative perspective. The first hint of what that might be is given in his preface where he writes that the intellect "builds cathedrals before workmen have moved a stone." With this comment, he states that "the spiritual precedes the material" and displays the rationalist flag. Later, he gives Berkeley credit for emphasizing that things are, as a reflection of god's unity, brought together and unified by mind. This type of insight is the basis for Whitehead's "prehensive" theory of mind where material reality is intertwined in space and time even if it is not "contemporaneous." In this way, Whitehead points his theory in the direction of universal wholeness and the lack of an organic theory of the whole is, he believes, the chief defect of 18th century science.
Whitehead then draws certain conclusions from the world of science and quantum theory in particular. Electrons don't move in a continuous, successive pattern, but leap from one orbit to another. At the heart of matter, Whitehead believes, there is a "discontinuous existence in space." This movement at the quantum level he characterizes as vibration, or some sort of expression of energy, not as hard units of matter moving across space. In fact, Whitehead says that this understanding of quantum reality gets "rid" of matter and opens the field "for the introduction of some new doctrine of organism which may take the place of the materialism" where, since the 17th century, "science has saddled philosophy." Another problem with that scientific worldview is what Whitehead calls "misplaced concreteness" where, in its emphasis on abstracting parts from the whole, we skew our understanding of reality because abstractions remove things. The problem here is that molecules don't operate in isolation but as part of a whole that guides or directs the workings of the parts. This insight now moves Whitehead's theory back to the concept of "prehensive" unity, where any "part," from molecule to the self, is dependent in some sense on the larger universe.
In this spirit, Whitehead pulls together rationalism and materialism into his organic theory whereby association, not seperateness and competition, becomes reality's signature. This association (mutual cooperation) is "exhibited in the simplest physical entities, such as the association between electrons and positive nuclei, and in the whole realm of animate nature." In this way, the physical world is seen as organic and the organic world is seen as physical. For Whitehead, the association of species in ecosystems express this mutuality best, to which he provides an additional component whereby the whole provides for both permanance (identity) and change, with change (movement, transformation) being understood as necessary for permanance to continue over time. This, as the essence of adaptation in evolutionary theory, illustrates the creativity (e.g., the evolutionary past expresses itself in the present, and the present expresses itself in the future) as well as the prehensive concept that many have come to associate as Whitehead's primary thought. The human mind is the highest point (to date?) of the evolutionary process (e.g., man's "wandering" enables him to "ascend the scale of being") and mind enables humans to see the universal unity that Berkeley and Whitehead articulated.
Whitehead affirmatively quotes Bacon that (physical) "bodies have perception in the sense that they pick up signals from other bodies and 'embrace what is agreeable and reject what is not.'" While Whitehead says that Bacon in this statement provides a "more sophisticated treatment than passive matter acted upon externally by other matter," he does not point out that this physical dynamic applies to the animate world as well and is another way the organic and inorganic world have something fundamental in common. In emphasing association and unity, Whitehead overextends his argument by dismissing the role of competition and opposing forces in his version of reality. With his reference to "the Gospel of Force," Whitehead's negative view is clear. But when he says, as an example, that "lions and tigers are not...successful species because they rely on a force that "bars cooperation," he moves into a dead end. With adaptation and survval as the criteria for evolutionary success, it's not clear why Whitehead would make such a statement about these animals other than "force" is at odds with his theory. "Force," he says, "is incapable with social life." That statement makes sense only if his vision is that of the peaceable kingdom. Pack animal predators are highly social within their group despite the havoc they create on their prey. Force is an inconvenient truth for Whitehead. Unfortunately for his theory, "unity" can be achieved by species or humans overpowering and dominating the other (e.g., wolves,as cooperative and associative beings, survive by killing prey; tyrants survive by eliminating opposition). Whitehead does not want to go in this direction, even though forces of opposition are equal in stature in the cosmic playing field to the forces of association. This is why, to use the Bacon observation, bodies embrace what is agreeable and reject what is not.
At the top of Whitehead's theory lies some version of God who (or that) somehow allows for eternal forms to come into place as existent bodies. This accounts for their "permanent" identity (manifestation of eternal form) yet allows for their transformation and creativity over time. Until he gets to this point, Whitehead's theory has many appealing features. Here, however, he leaps into the mystical sphere in making a connection (through "ingression") between cosmic permanence and earthly change. This is unfortunate as his theory goes silent on the potential for a materilistic explanation for the origin and maintenance of life and, importantly, for some thoughtful speculation as to what constitutes the permanent life force (Bergson?) that "oversees" change and, thereby, allows life to adapt over time.