Plastic Principle
The Plastic Principle is an idea introduced into Western thought by the English philosopher Ralph Cudworth to explain the function of nature and life in the face of both the mechanism and materialism of the Enlightenment. It is a dynamic functional power that contains all of natural law, and is both sustentative and generative, organizing matter according to Platonic Ideas, that is, archetypes that lie beyond the physical realm coming from the Mind of God or Deity, the ground of Being.
Background
The role of nature was one faced by philosophers in the Age of Reason or Enlightenment. The prevailing view was either that of the Church of a personal deity intervening in his creation, producing miracles, or an ancient pantheism – deity pervading all things and existing in all things. However, the "ideas of an all-embracing providential care of the world and of one universal vital force capable of organizing the world from within." presented difficulties for philosophers of a spiritual as well as materialistic bent.Cambridge Platonists
The Cartesian idea of nature as mechanical, and Hobbes' materialistic views were countered by the English philosopher, Ralph Cudworth, who, in his True intellectual system of the universe, addressing the tension between theism and atheism, took both the Stoic idea of Divine Reason poured into the world, and the Platonic idea of the world soul to posit a power that was polaric – "either as a ruling but separate mind or as an informing vital principle – either nous hypercosmios or nous enkosmios.Cudworth was a member of the Cambridge Platonists, a group of English seventeenth-century thinkers associated with the University of Cambridge who were stimulated by Plato's teachings but also were aware or and influenced by Descartes, Hobbes, Bacon, Boyle and Spinoza. The other important philosopher of this group was Henry More. More held that spiritual substance or mind controlled inert matter. Out of his correspondence with Descartes, he developed the idea that everything, whether material or non, had extension, an example of the latter being space, which is infinite and which then is correlative to the idea of God. In developing this idea, More also introduced a causal agent between God and substance, or Nature in his Hylarchic Principle, derived from Plato's anima mundi or world soul, and the Stoic's pneuma, which encapsulates the laws of nature, both for inert and vital nature, and involves a sympathetic resonance between soul and soma.
Cudworth's idea of 'the Plastick Life of Nature'
Like More, Cudworth put forward the idea of 'the Plastick Life of Nature', a formative principle that contains both substance and the laws of motion, as well as a nisus or direction that accounts for design and goal in the natural world. He was stimulated by the Cartesian idea of the mind as self-consciousness to see God as consciousness. He first analysed four forms of atheism from ancient times to present, and showed that all misunderstood the principle of life and knowledge, which involved unsentient activity and self-consciousness.All of the atheistic approaches posted nature as unconscious, which for Cudworth was ontologically unsupportable, as a principle that was supposed to be the ultimate source of life and meaning could only be itself self-conscious and knowledgeable, that is, rational, otherwise creation or nature degenerates into inert matter set in motion by random external forces. Cudworth saw nature as a vegetative power endowed with plastic and spermatic forces, but one with Mind, or a self-conscious knowledge. This idea would later emerge in the Romantic period in German science as Blumenbach's Bildungstreib and the Lebenskraft.
The essence of atheism for Cudworth was the view that matter was self-active and self-sufficient, whereas for Cudworth the plastic power was unsentient and under the direct control of the universal Mind or Logos. For him atheism, whether mechanical or material could not solve the "phenomenon of nature." Henry More argued that atheism made each substance independent and self-acting such that it 'deified' matter. Cudworth argued that materialism/mechanism reduced "substance to a corporeal entity, its activity to causal determinism, and each single thing to fleeting appearances in a system dominated by material necessity."
Cudworth had the idea of a general plastic nature of the world, containing natural laws to keep all of nature, inert and vital in orderly motion, and particular plastic natures in particular entities, which serve as 'Inward Principles' of growth and motion, but ascribes it to the Platonic tradition:
Further, Cudsworth's plastic principle was also a functional polarity. As he wrote:
As another historian notes in conclusion, "Cudworth’s theory of plastic natures is offered as an alternative to the interpretation of all of nature as either governed by blind chance, or, on his understanding of the Malebranchean view, as micro-managed by God."
Plastic Principle and mind
Cudworth's plastic principle also involves a theory of mind that is active, that is, God or the Supreme Mind is "the spermatic reason" which gives rise to individual mind and reason. Human mind can also create, and has access to spiritual or super-sensible 'Ideas' in the Platonic sense. Cudworth challenged Hobbesian determinism in arguing that will is not distinct from reason, but a power to act that is internal, and therefore, the voluntary will function involves self-determination, not external compulsion, though we have the power to act either in accordance with God's will or not. Cudworth's 'hegemonikon' is a function within the soul that combines the higher functions of the soul on the one hand with the lower animal functions, and also constitutes the whole person, thus bridging the Cartesian dualism of body and soul or psyche and soma. This idea provided the basis for a concept of self-awareness and identity of an individual that is self-directed and autonomous, an idea that anticipates John Locke.Influence on Locke
Locke examined how man came to knowledge via stimulus, which approach led to his idea of the 'thinking' mind, which is both receptive and pro-active. The first involves receiving sensations and the second by reflection – "observation of its own inner operations", with the second activity acting upon the first. Thought is set in motion by outer stimuli which 'simple ideas' are taken up by the mind's self-activity, an "active power" such that the outer world can only be real-ized as action by the activity of consciousness. Locke also took the issue of life as lying not in substance but in the capacity of the self for consciousness, to be able to organize disparate events, that is to participate life by means of the sense experiences, which have the capacity to produce every kind of experience in consciousness. These ideas of Locke were taken over by Fichte and influenced German Romantic science and medicine..Thomas Reid and his "Common Sense" philosophy, was also influenced by Cudworth, taking his influence into the Scottish Enlightenment.
Berkeley later developed the idea of a plastic life principle with his idea of an 'aether' or 'aetherial medium' that causes 'vibrations' that animate all living beings. For Berkeley, it is the very nature of this medium that generates the 'attractions' of entities to each other.
Berkeley meant this 'aether' to supplant Newton's gravity as the cause of motion. However, in Berkeley's conception, aether is both the movement of spirit and the motion of nature.
Both Cudworth's views and those of Berkeley were taken up by Coleridge in his metaphor of the eolian harp in his 'Effusion XXXV' as one commentator noted: "what we see in the first manuscript is the articulation of Cudworth’s principle of plastic nature, which is then transformed in the published version into a Berkeleyan expression of the causal agency of motion performed by God’s immanent activity."
Cudworth's idea of the plastic principle and that of mind will also be taken up in a new way in the idea of emergent evolution.