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George Berkeley

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Bishop George Berkeley
Bishop George Berkeley

George Berkeley (bark-lee) (March 12, 1685January 14, 1753), also known as Bishop Berkeley, was an influential Irish philosopher whose primary philosophical achievement is the advancement of what has come to be called subjective idealism, summed up in his dictum, "Esse est percipi" ("To be is to be perceived"). Basically, the theory is that there is no such thing as matter, only mental events and minds to perceive them. He wrote a number of works, the most widely-read of which are his Treatise Concerning the Principles of Human Knowledge (1710) and Three Dialogues between Hylas and Philonous (1713) (Philonous, the "lover of the mind", representing Berkeley himself). In 1734 he published The Analyst, a critique of the foundations of science, which was very influential in the subsequent development of mathematics.

George Berkeley was born in Dysert Castle, near Thomastown, Ireland, the eldest son of William Berkeley, a cadet of the noble family of Berkeley. He was educated at Kilkenny College and attended Trinity College, Dublin completing a masters degree in 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, published in 1709. Though giving rise to much controversy at the time, its conclusions are now accepted as an established part of the theory of optics. There next appeared in 1710 the Treatise concerning the Principles of Human Knowledge, which was followed in 1713 by 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 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 materialism of the time. A theory so novel was, as might be expected, received with widespread ridicule, though his genius was realised by some of the more elect spirits, such as Dr. S. Clarke. Shortly afterwards he 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 Orders, earning his doctorate in 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 Bermuda for training ministers for the colonies, and missionaries to the Indians, in pursuit of which he gave up his deanery with its income of 1100, and went to America on a salary of 100. He landed near Newport, Rhode Island where he bought a plantation - the famous "Whitehall." On October 4, 1730, Berkeley purchased "a Negro man named Philip aged Fourteen years or thereabout." A few days later he purchased "a negro man named Edward aged twenty years or thereabouts." On June 11, 1731, "Dean Berkeley baptized three of his negroes, 'Philip, Anthony, and Agnes Berkeley' " (The bills of slave can be found in the British Museum (Ms. 39316). George C. Mason, Annals of Trinity Church, 1698-1821, 51).

Berekley's sermons explained to the colonists why Christianity supported slavery, and hence slaves should become baptized Christians: "It would be of advantage to their [slave masters'] affairs to have slaves who should 'obey in all things their masters according to the flesh, not with eye-service as men-pleasers, but in singleness of heart, as fearing God;' that gospel liberty consists with temporal servitude; and that their slaves would only become better slaves by being Christian" (Berkeley, Proposal, 347. See his sermon in Newport, preached October, 1729).

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. In 1734, he was appointed Bishop of Cloyne. Soon afterwards he published Alciphron, or The Minute Philosopher, directed against Shaftesbury, and in 1734-37 The Querist. His last publications were Siris, a treatise on the medicinal virtues of tar-water, and Further Thoughts on Tar-water.

He remained at Cloyne until 1752, when he retired and went to Oxford to live with his son. His affectionate disposition and genial manners made him much beloved. As a thinker his is the greatest name in English philosophy between Locke and Hume. His style is clear and dignified.

The city of Berkeley, California is named after him, but the pronunciation of its name has evolved to suit American speech.

Contents

Contributions to Philosophy

Born in Ireland, Berkeley's theorizing was Empiricism at its most extreme. As a young man, Berkeley theorized that the objects we perceive exist precisely as they appear to the senses. Objective knowledge is possible because the perceived object is the only object that exists. There is no "real" object which is the substratum of the perceived object. There is no "real" object (no matter) "behind" the object as we perceive it, which "causes" our perceptions. All that exists is the object as we perceive it, and this is the real object.

Since the object we perceive is the only object that exists, the object is precisely as it appears and, if we need to speak at all of the "real" or "material" object (the latter in particular being a confused term which Berkeley sought to dispose of), it is this perceived object to which all such names should exclusively refer.

This arouses the question whether this perceived object is "objective" in the sense of being "the same" for our fellow humans, in fact if even the concept of other human beings (beyond our perception of them) is valid. Berkeley argues that since we experience other humans in the way they speak to us—something which is not originating from any activity of our own—and since we learn that their view of the world is consistent with ours, we can believe in their existence and in the world being identical (similar) for everyone.

It follows that:

  1. Our perceptions of objects are all perfectly accurate and objective.
  2. Any knowledge of the empirical world is to be obtained only through direct perception.
  3. Error comes about through thinking about what we perceive.
  4. Knowledge of the empirical world of people and things and actions around us may be purified and perfected merely by stripping away all thought (and with it language) from our pure perceptions.

From this it follows that:

  1. The ideal form of scientific knowledge is to be obtained by pursuing pure de-intellectualized perceptions.
  2. If we would pursue these, we would be able to obtain the deepest insights into the natural world and the world of human thought and action which is available to man.
  3. The goal of all science, therefore, is to de-intellectualize or de-conceptualize, and thereby purify, our perceptions.

Theologically, one consequence of Berkeley's views is that they require God to 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's quadrangle. Rather, my perception of the tree is an idea that God's mind has produced in mine, and the tree continue to exist in the Quad when "nobody" is there simply because God is always there.

The philosophy of David Hume concerning causality and objectivity is an elaboration of another aspect of Berkeley's philosophy. Immanuel Kant mischaracterized Berkeley as a radical idealist and falsely claimed that Berkeley's principles make objective knowledge impossible. As Berkeley's thought progressed, he may have almost entirely assimilated his theories to those of Plato, though this is far from certain. Luce, the most eminent Berkeley scholar of the twentieth century, constantly stressed the continuity of Berkeley's mature philosophy. This suggests a continuity between the Principles, Alciphron and the rest of Berkeley's philosophical works. Furthermore, Berkeleys unwavering panentheism is evidence that counts against a complete assimilation with Platonism, and Alciphron is a development rather than a revision of anything in the earlier works. The fact that the main works were re-issued just a few years before Berkeley's death without major changes also counts against any theory which attributes to him a volte face.

Over a century later Berkeley's thought experiment was summarised in a limerick and reply by Ronald Knox;

There was a young man who said "God
Must think it exceedingly odd
If he finds that this tree
Continues 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 this tree
Will continue to be
Since observed by Yours faithfully, God."

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 negative 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 Newton himself, although 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 calculus, and in particular the notion of fluxion or infinitesimal change 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 mechanics – 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 rigorous form 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 which Berkeley discovered in Newton's original approach.

See also

References

External links

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