Johannes Jacobus Poortman

Johannes Jacobus Poortman

Johannes Jacobus Poortman (Rotterdam April 26, 1896 – The Hague December 21, 1970), studied philosophy and psychology at Groningen University under Professor Gerardus Heymans. In 1919 he received his Master of Arts; many years later he would also earn a Ph.D.. He was also a theosophist.

Poortman studied at the universities of Hamburg, Genève, the Sorbonne in Paris and in Vienna. From 1932 to 1938 he was member of the Council of the Dutch Society for Psychical Research. From 1958 to 1966 he was a Professor of metaphysics at the University of Leiden. After he retired his chair was successively occupied by Prof. Dubbink, Prof. van Vledder and Prof. Gerding.

Poortman was the maker of the Repertory of Dutch philosophers, Repertorium der Nederlandse Wijsbegeerte, which can be consulted on line at the site of the Leiden University.

He formulated the idea of a "hylic pluralism" (in Dutch "hylisch pluralisme") of the plurality of matter, a model of the universe in which science and metaphysics are no longer contradictory. This vision was explained in his four volume work, "Vehicles of Consciousness".

Poortmans categories

Poortman distinguished six different metaphysical views of the world, which he named from "Alpha" to "Zeta".

# "Alpha": monistic materialism, the view that only one kind of stuff, i.e. matter, ultimately exists in this universe.
# "Beta": the view that only matter exists, but that there are different kinds of matter (hylic pluralism), specifically that God and other spiritual beings are created of a "finer" kind of matter, not visible to our scientific instruments.
# "Gamma": that only matter exists, with the exception of one single entity which is not material. This entity may be God, Brahman, etc. This is the view held by Poortman himself.
# "Delta": the view that two separate kinds of material and one kind of spiritual, immaterial entity exists, for example the early Christian and Gnostic belief that man was made of body, soul and spirit, where the first two are different forms of matter and the spirit is immaterial.
#"Epsilon": a view in which matter and mind are totally separate things. This view was for example held by René Descartes in his "cogito ergo sum" statement, see mind dualism.
#"Zeta": monistic idealism or illusionism, where matter is seen as some kind of emanation of God or another spiritual being. Especially this classification applies to the Brahman of the Hinduism.


* J. J. Poortman: "Vehicles of Consciousness. The Concept of Hylic Pluralism (Ochema)", vol I–IV, The Theosophical Society in Netherlands, 1978

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • List of Dutch people — This is a list of Dutch people who are famous and/or have an article:Art Architecture *Jaap Bakema (1914 1981) *Hendrik Petrus Berlage (1856 1934) *Jo van den Broek (1898 1978) *Pierre Cuypers (1827 1921) *Willem Marinus Dudok (1884 1974) *Aldo… …   Wikipedia

  • Repertorium der Nederlandse Wijsbegeerte — is one of the major works of Professor Dr. Johannes Jacobus Poortman. This is an inventory of all publications in the Netherlands or in the Dutch language or by Dutch philosophers on philosophy. After Poortman died in 1970 the work was continued… …   Wikipedia

  • Plane (metaphysics) — In metaphysics and esoteric cosmology, a plane, other than the physical plane, is conceived as a subtle state of consciousness that transcends the known physical universe.The concept may be found in religious, metaphysical and esoteric teachings… …   Wikipedia

  • University of Groningen — Infobox University | name = University of Groningen latin name = Academia Groningana motto = Verbum domini lucerna pedibus nostris The word of the Lord is a light for our feet established = 1614 city = Groningen rector = Prof. dr. Frans Zwarts… …   Wikipedia

  • Université de Groningue — Devise Verbum domini lucerna pedibus nostris Nom original Rijksuniversiteit Groningen I …   Wikipédia en Français

  • Gerardus Heymans — (17 April 1857, Ferwerderadeel ndash; 18 February 1930, Groningen) was a famous philosopher, psychologist, a follower of Fechner s idea of psychic monism, and from 1890 to 1927 a Professor at Groningen University.His student Johannes Jacobus… …   Wikipedia

  • Mental substance — refers to the concept held by dualists and idealists, that minds are made up of non physical substance. This substance is often referred to as consciousness. This is opposed to the materialists, who hold that what we normally think of as mental… …   Wikipedia

  • Universidad de Groningen — Escudo Rijksuniversiteit Groningen (en alemán) University of Groningen (en inglés) Academia Groningana (en latín) Acrónimo RUG Lema «Verbum domini lucerna pedibus nostris …   Wikipedia Español

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.