… on the other plane, the plane of immanence or consistency, the principle of composition itself must be perceived, cannot but be perceived at the same time as that which it composes or renders. … Perception will no longer reside in the relation between a subject and an object, but rather in the movement serving as the limit of that relation, in the period associated with the subject and object. Perception will confront its own limit; it will be in the midst of things, throughout its own proximity, as the presence of one haecceity in another, the prehension of one by the other or the passage from one to the other: Look only at the movements.
Gilles Deleuze and Felix Guattari, A Thousand Plateaus
The perceptive constitution of the actual entity presents the problem, How can the other actual entities, each with its own formal existence, also enter objectively into the perceptive constitution of the actual entity in question? This is the problem of the solidarity of the universe. The classical doctrines of universals and particulars, of subject and predicate, of individual substances not present in other individual substances, of the externality of relations, alike render this problem incapable of solution. The answer given by the organic philosophy is the doctrine of prehensions, involved in concrescent integrations, and terminating in a definite, complex unity of feeling. To be actual must mean that all actual things are alike objects, enjoying objective immortality in fashioning creative actions; and that all actual things are subjects, each prehending the universe from which it arises. The creative action is the universe always becoming one in a particular unity of self-experience, and thereby adding to the multiplicity which is the universe as many. …
Alfred North Whitehead, Process and Reality, Part II, Chapter I, Section VI