John Haldane; The Mystery of Emergence, Proceedings of the Aristotelian Society, Volume 96, Issue 1, 1 June 1996, Pages 261–268, https://doi.org/10.1093/aristot.

This paper explicates two notions of emergencewhich are based on two ways of distinguishinglevels of properties for dynamical systems.Once the levels are defined, the strategies ofcharacterizing the relation of higher level to lower levelproperties as diachronic and synchronic emergenceare the same. In each case, the higher level properties aresaid to be emergent if they are novel or irreducible with respect to the lower level properties. Novelty andirreducibility are given precise meanings in terms of the effectsthat the change of a bifurcation (...) or perturbation parameterin the system has. (The same strategy can be applied to otherways of separating levels of properties, like themicro/macro distinction.)The notions of emergence developed here are notions of emergencein a weak sense: the higher level emergent properties wecapture are always structural properties (or are realized insuch properties), that is, they are defined in terms of the lowerlevel properties and their relations. Diachronic and synchronicemergent properties are distinctions within thecategory of structural properties. (shrink)

All organised bodies are composed of parts, similar to those composing inorganic nature, and which have even themselves existed in an inorganic state; but the phenomena of life, which result from the juxtaposition of those parts in a certain manner, bear no analogy to any of the effects which would be produced by the action of the component substances considered as mere physical agents. To whatever degree we might imagine our knowledge of the properties of the several ingredients of a (...) living body to be extended and perfected, it is certain that no mere summing up of the separate actions of those elements will ever amount to the action of the living body itself. (shrink)

Es gibt nicht das Problem des Naturalismus, sondern – wie die Beiträge in diesem Band zeigen – eine ganze Familie von mehr oder weniger stark miteinander verbundenen Teilproblemen. In diesem Aufsatz soll es nur um eines dieser Teilprobleme gehen – das Problem des ontologi- schen Naturalismus. Oder, um es genauer zu sagen, um eine spezifische Variante dieses Teil- problems – das Problem des ontologischen Physikalismus. Die Grundthese des ontologischen Physikalismus lautet einfach.