- George Berkeley
region = Western Philosophy
18th century philosophy
color = #B0C4DE|
image_caption =| name = George Berkeley
birth = 12 March 1685
death = 14 January 1753
Metaphysics, Epistemology, Language, Mathematics, Perception
John Locke, Isaac Newton
David Hume, Edmund Burke, Immanuel Kant, Arthur Schopenhauer, A.J. Ayer
notable_ideas = Subjective Idealism, The Master Argument
George Berkeley (pronEng|ˈbɑrkli) (12 March 1685ndash 14 January 1753), also known as Bishop Berkeley, was a
philosopher. His primary philosophical achievement was the advancement of a theory he called " immaterialism" (later referred to as " subjective idealism" by others). This theory, summed up in his dictum, "Esse est percipi" ("To be is to be perceived"), contends that individuals can only directly know sensations and ideas of objects, not abstractions such as " matter." His most widely-read works are "A Treatise Concerning the Principles of Human Knowledge" (1710) and " Three Dialogues between Hylas and Philonous" (1713), in which the characters Philonous and Hylas represent Berkeley himself and his contemporary John Locke. In 1734, he published " The Analyst", a critique of the foundations of calculus, which was influential in the development of mathematics.
Berkeley was born at his family home, Dysart Castle, near
Thomastown, County Kilkenny, Ireland, the eldest son of William Berkeley, a cadet of the noble family of Berkeley. He was educated at Kilkenny Collegeand attended Trinity College, Dublin, completing a Master's degreein 1707. He remained at Trinity College after completion of his degree as a tutor and Greek lecturer.
His earliest publication was a mathematical one but the first which brought him into notice was his "Essay towards a New Theory of Vision", first published in 1709. In the essay, Berkeley examined visual distance, magnitude, position and problems of sight and touch. Though giving rise to much controversy at the time, its conclusions are now accepted as an established part of the theory of optics.
The next publication to appear was the "Treatise concerning the Principles of Human Knowledge" in 1710, which was followed in 1713 by "Three Dialogues between Hylas and Philonous", in which he propounded his system of philosophy, the leading principle of which is that the world as represented to our senses depends for its existence, as such, on being perceived.
Of this theory, the "Principles" gives the exposition and the "Dialogues" the defence. One of his main objects was to combat the prevailing
materialismof the time. The theory was largely received with ridicule; while even those, such as Samuel Clarkeand William Whiston, who did acknowledge his "extraordinary genius," were nevertheless convinced that his first principles were false.
Shortly afterwards, Berkeley visited England, and was received into the circle of Addison, Pope and Steele. In the period between 1714 and 1720, he interspersed his academic endeavours with periods of extensive travel in Europe. In 1721, he took
Holy Ordersin the Church of Ireland, earning his doctoratein divinity, and once again chose to remain at Trinity College Dublin, lecturing this time in Divinity and in Hebrew. In 1724, he was made Dean of Derry.
In 1725, he formed the project of founding a college in
Bermudafor training ministers for the colonies, and missionaries to the Indians, in pursuit of which he gave up his deanery with its income of £1100.
In 1728, he married Anne Forster, daughter of the Lord Chief Justice of Ireland. He then went to America on a salary of £100. He landed near
Newport, Rhode Island, where he bought a plantationndash the famous "Whitehall." He lived at the plantation while he waited for funds for his college to arrive. The funds, however, were not forthcoming and in 1732 he returned to London. While living on London's Saville Street, he took part in the efforts to create a home for the city's abandoned children. The Foundling Hospitalwas founded by Royal Charterin 1739 and Berkeley is listed as one of its original governors. In 1734, he was appointed Bishop of Cloynein Ireland. Soon afterwards, he published "Alciphron, or The Minute Philosopher", directed against both Shaftesbury and Bernard de Mandeville; and in 1735–37 "The Querist".
His last two publications were "Siris: Philosophical reflexions and inquiries concerning the virtues of tar-water, and divers other subjects connected together and arising from one another" (1744) and "Further Thoughts on Tar-water" (1752).
Pine taris an effective antiseptic and disinfectant when applied to cuts on the skin, but Berkeley argued for the use of pine tar as a broad panacea for disease in general. It is said that his 1744 book on the medical benefits of pine tar was his best-selling book in his lifetime. [See [Stanford Encyclopedia of Philosophy | http://plato.stanford.edu/entries/berkeley/] ]
He remained at Cloyne until 1752, when he retired and went to Oxford to live with his son. He died soon afterward and was buried in
Christ Church Cathedral, Oxford. His affectionate disposition and genial manners made him much loved and held in warm regard by many of his contemporaries.
Contributions to philosophy
As a young man, Berkeley theorized that individuals cannot know if an object "is"; they can only know if an object "is perceived" by a mind. He stated that individuals cannot think or talk about an object's "being", but rather think or talk about an object's "being perceived" by someone. That is, individuals cannot know any "real" object or
matter"behind" the object as they perceive it, which "causes" their perceptions. He thus concluded that all that individuals know about an object is their perception of it.
Under his theory, the object a person perceives is the only object that the person knows and experiences. If individuals need to speak at all of the "real" or "material" object, the latter in particular being a confused term that Berkeley sought to dispose of, it is this perceived object to which all such names should exclusively refer.
This raises the question whether this perceived object is "objective" in the sense of being "the same" for fellow humans. In fact, is the concept of "other" human beings, beyond an individual's perception of them, valid? Berkeley argued that since an individual experiences other humans in the way they speak to him —something which is not originating from any activity of his own —and since he learns that their view of the world is consistent with his, he can believe in their existence and in the world being identical or similar for everyone.
It follows that:
# Any knowledge of the world is to be obtained only through direct perception.
# Error comes about through thinking about "what" individuals perceive.
# Knowledge of the world of people, things and actions around them may be purified and perfected merely by stripping away all thought, and with it language, from their pure perceptions.
From this it follows that:
# The ideal form of scientific knowledge is to be obtained by pursuing pure de-intellectualized perceptions.
# If individuals would pursue these, we would be able to obtain the deepest insights into the natural world and the world of human thought and action that is available to man.
# The goal of all science, therefore, is to de-intellectualize or de-conceptualize, and thereby purify, human perceptions.
Theologically, one consequence of Berkeley's views is that they require
Godto be present as an immediate cause of all our experiences. God is not the distant engineer of Newtonian machinery that in the fullness of time led to the growth of a tree in the university quadrangle. Rather, my perception of the tree is an idea that God's mind has produced in mine, and the tree continues to exist in the quadrangle when "nobody" is there, simply because God is an infinite mindthat perceives all.
The philosophy of
David Humeconcerning causality and objectivity is an elaboration of another aspect of Berkeley's philosophy. As Berkeley's thought progressed, his works took on a more Platonic character: "Siris", in particular, displays an interest in highly abstruse and speculative metaphysics which is not to be found in the earlier works. However, A.A. Luce, the most eminent Berkeley scholar of the twentieth century, constantly stressed the continuity of Berkeley's philosophy. The fact that Berkeley returned to his major works throughout his life, issuing revised editions with only minor changes, also counts against any theory that attributes to him a significant volte-face.
Over a century later Berkeley's thought experiment was summarized in a limerick by
Ronald Knoxand an anonymous reply::"There was a young man who said "God":"Must find it exceedingly odd"::"To think that the tree"::"Should continue to be":"When there's no one about in the quad."
:"Dear Sir: Your astonishment's odd;":I "am" always "about in the quad."::"And that's why the tree"::"Will continue to be":"Since observed by, Yours faithfully, God."
In reference to Berkeley's philosophy, Dr.
Samuel Johnsonkicked a heavy stone and exclaimed, "I refute it "thus"!" A philosophical empiricist might reply that the only thing that Dr. Johnson knew about the stone was what he saw with his eyes, felt with his foot, and heard with his ears. That is, the "existence" of the stone consisted exclusively of Dr. Johnson's "perceptions". It might be possible that Dr. Johnson had actually kicked an unusually grey tree stump, or perhaps that a sudden attack of arthritis had flared up just when he was about to kick a random patch of grass with a painting of a rock. Whatever the stone "really" was, apart from the sensations that he felt and the ideas or mental pictures that he perceived, was completely unknown to him. The kicked stone existed, ultimately, as an idea in his mind, nothing more and nothing less.
John Locke (Berkeley's predecessor) states that we define an object by its primary and secondary qualities. He takes heat as an example of a secondary quality. If you put one hand in a bucket of cold water, and the other hand in a bucket of warm water, then put both hands in a bucket of lukewarm water, one of your hands is going to tell you that the water is cold and the other that the water is hot. Locke says that since two different objects (both your hands) perceive the water to be hot "and" cold, then the heat is not a quality of the water.
While Locke used this argument to distinguish primary from secondary qualities, Berkeley extends it to cover primary qualities in the same way. For example, he says that size is not a quality of an object because the size of the object depends on the distance between the observer and the object, or the size of observer. Since an object is a different size to different observers, then size is not a quality of the object. Berkeley refutes shape with a similar argument and then asks: if neither primary qualities nor secondary qualities are of the object, then how can we say that there is anything more than the qualities we observe?
Treatise Concerning the Principles of Human Knowledge" was published three years before the publication of Arthur Collier's " Clavis Universalis", which made assertions similar to those of Berkeley's. However, there seemed to have been no influence or communication between the two writers.
Arthur Schopenhaueronce wrote of him: "Berkeley was, therefore, the first to treat the subjective starting-point really seriously and to demonstrate irrefutably its absolute necessity. He is the father of idealism…"" Parerga and Paralipomena", Vol. I, "Fragments for the History of Philosophy," § 12] .
The Analyst controversy
In addition to his contributions to philosophy, Bishop Berkeley was also very influential in the development of mathematics, although in a rather indirect sense. In 1734, he published "
The Analyst", subtitled "A DISCOURSE Addressed to an Infidel Mathematician". The infidel mathematician in question is believed to have been either Edmond Halley, or Isaac Newtonhimself, although if to the latter, the discourse would then have been posthumously addressed, as Newton died in 1727. "The Analyst" represented a direct attack on the foundations and principles of calculusand, in particular, the notion of fluxion or infinitesimalchange, which Newton and Leibniz had used to develop the calculus.
Berkeley regarded his criticism of calculus as part of his broader campaign against the religious implications of Newtonian mechanicsndash as a defence of traditional Christianity against
deism, which tends to distance God from His worshippers.
As a consequence of the resulting controversy, the foundations of calculus were rewritten in a much more formal and
rigorousform using limits. It was not until 1966, with the publication of Abraham Robinson's book "Non-standard Analysis", that the concept of the infinitesimal was made rigorous, thus giving an alternative way of overcoming the difficulties that Berkeley discovered in Newton's original approach.
Berkeley's influence is reflected in the institutions of education named in his honour. Both
University of California, Berkeley, and the city that grew up around the university, were named after him, although the pronunciation has evolved to suit American English--(pronEng|bûrkli like "Burke-Lee"). The naming was suggested in 1866 by a trustee of the then College of California, Frederick Billings. Billings was inspired by Berkeley's "Verses on the Prospect of Planting Arts and Learning in America", particularly the final stanza: "Westward the course of empire takes its way; The first four Acts already past, A fifth shall close the Drama with the day; Time's noblest offspring is the last." A residential college in Yale Universityalso bears Berkeley's name, as does the Berkeley Library at Trinity College, Dublin.
*"Philosophical Commentaries" (1707–08, notebooks)
An Essay towards a New Theory of Vision" (1709)
A Treatise Concerning the Principles of Human Knowledge", Part I (1710)
Three Dialogues between Hylas and Philonous" (1713)
*"De Motu" (1721)
*"Alciphron: or the Minute Philosopher" (1732)
*"The Theory of Vision or Visual Language … Vindicated and Explained" (1733)
The Analyst" (1734)
*"The Querist" (1735–37)
Tlön, Uqbar, Orbis Tertius"
List of people on stamps of Ireland
Ewald, William B., ed., 1996. "From Kant to Hilbert: A Source Book in the Foundations of Mathematics", 2 vols. Oxford Uni. Press.
*1707. "Of Infinites", 16–19.
*1709. "Letter to Samuel Molyneaux", 19–21.
*1721. "De Motu", 37–54.
*1734. "The Analyst", 60–92.
* cite book
author=R.H. Nichols and F A. Wray
title=The History of the Foundling Hospital
publisher=Oxford Univ. Press
year=1935 p. 349.
* cite book
John Daniel Wild
title=George Berkeley: a study of his life and philosophy
publisher=Russell & Russell
* [http://georgeberkeley.tamu.edu/links.html A list of the published works by and about Berkeley as well as online links]
* [http://tigger.uic.edu/~hilbert/Images%20of%20Berkeley/Berk_life.htm Berkeley's Life and Works]
*gutenberg author|id=George_Berkeley|name=George Berkeley
* [http://www.utm.edu/research/iep/b/berkeley.htm Page in the Internet Encyclopedia of Philosophy]
* [http://www.bbc.co.uk/dna/h2g2/A3472986 Another perspective on how Berkeley framed his immaterialism]
* [http://www.maths.tcd.ie/pub/HistMath/People/Berkeley/Analyst/ Original texts and discussion concerning "The Analyst" controversy]
* [http://home.iitk.ac.in/~cat/berkeleybiblio A bibliography on George Berkeley]
* [http://www.earlymoderntexts.com/ More easily readable versions of Principles of Human Knowledge, Three Dialogues, and Alciphron]
* [http://easyweb.easynet.co.uk/~ursa/philos/berkeley.htm An extensive compendium of online resources, including a gallery of Berkeley's images]
* [http://www.btinternet.com/~glynhughes/squashed/berkeley.htm A version of Berkeley's PHK condensed and rewritten for faster reading.]
NAME= Berkeley, George
ALTERNATIVE NAMES=Bishop Berkeley
DATE OF BIRTH=12 March 1685
PLACE OF BIRTH=
DATE OF DEATH=14 January 1753
PLACE OF DEATH=
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