Among the men of high intellect who flourished in the age of Pope, George Berkeley is one of the most distinguished. Born in 1685 of poor parents, in a cottage near Dysert Castle, in Kilkenny, he went up to Trinity College, Dublin, in 1700, and there, first as student, and afterwards as tutor, he remained for thirteen years. In the course of them he was ordained, and gained a fellowship. In 1709 he published his Essay on Vision, and in the following year the Principles of Human Knowledge, works which thus early made him famous as a philosopher, and a puzzle to many who failed to understand his 'new principle' with regard to the existence of matter.

In 1712 Berkeley visited England, probably for the first time, and was introduced to the London wits. Already in these youthful days there was in him much of that magic power which some men exercise unconsciously and irresistibly. Swift felt the spell, called Berkeley a great philosopher, and spoke of him to all the Ministers; while Atterbury, upon being asked what he thought of him, exclaimed: 'So much understanding, so much knowledge, so much innocence, and such humility, I did not think had been the portion of any but angels till I saw this gentleman.' An incident occurred, it is conjectured during the course of this visit, which led to memorable results. He dined once with Swift at Mrs. Vanhomrigh's, and met her daughter Hester. Many years later, Vanessa destroyed the will she had made in Swift's favour, and left half of her property to Berkeley. While in London the future bishop was warmly welcomed by Steele, and wrote several essays for him in the Guardian against the Freethinkers, and especially against Anthony Collins (1676-1729), whose arguments in his Discourse on Freethinking (1713) are ridiculed in the Scriblerus Memoirs. Collins, it may be observed here, wrote a treatise several years later on the Grounds of the Christian Religion (1724) which called forth thirty-five answers. During this visit Berkeley also published one of his most original works, Dialogues between Hylas and Philonous, a book marked by that consummate beauty of style for which he is distinguished.

In November, 1713, the Earl of Peterborough was sent on an embassage to the King of Sicily, and on Swift's recommendation took Berkeley with him as his chaplain and secretary. Ten months were spent on this occasion in France and Italy. Another continental tour followed, in the course of which Berkeley wrote to Arbuthnot of his ascent of Vesuvius, and to Pope of his life at Naples. Five years were spent abroad, and he returned to England to learn of the failure of the South Sea Scheme. In his Essay towards Preventing the Ruin of Great Britain (1721), the main argument is the obvious one, that national salvation is only to be secured by individual uprightness. He deplores 'the trifling vanity of apparel' which we have learned from France, advocates the revival of sumptuary laws, considers that we are 'doomed to be undone' by luxury, and by the want of public spirit, and declares that 'neither Venice nor Paris, nor any other town in any part of the world ever knew such an expensive ruinous folly as our masquerade.'

In the summer of this year he was again in London, and Pope asked him to spend a week in his 'Tusculum.' One promotion followed another until Berkeley became Dean of Derry, with an income of from £1,500 to £2,000 a year. He did not hold this dignified position long, having conceived the magnificent but Utopian idea of founding a Missionary College in the Bermudas—the 'Summer Isles' celebrated in the verse of Waller and of Marvell—for the conversion of America.

And now Berkeley exhibited his amazing power of influencing other men. The members of the Scriblerus Club laughed at the Dean's project, but so powerful was his eloquence, that 'those who came to scoff remained to subscribe.' Moreover, with Sir Robert Walpole as Prime Minister, he actually obtained a grant from the State of £20,000 in order to carry out the project, the king gave a charter, and to crown all, Sir Robert put his own name down for £200 on the list of subscribers. 'The scheme,' says Mr. Balfour, 'seems now so impracticable that we may well wonder how any single person, let alone the representatives of a whole nation, could be found to support it. In order that religion and learning might flourish in America, the seeds of them were to be cast in some rocky islets severed from America by nearly six hundred miles of stormy ocean. In order that the inhabitants of the mainland and of the West Indian colonies might equally benefit by the new university, it was to be placed in such a position that neither could conveniently reach it.'[60] Berkeley, who had recently married, left England for Rhode Island, where he stayed for about three years and wrote Alciphron (1732), in which he attacks the freethinkers under the title of Minute Philosophers. Then on learning from Walpole that the promised money 'would most undoubtedly be paid as soon as suits public convenience' which would be never, he returned to England, and through the Queen's influence was made Bishop of Cloyne. In that diocese eighteen years of his life were spent. In the course of them he published the Querist (1735-1737), an Essay on the Social State of Ireland (1744), and, in the same year, Siris, which contains the bishop's famous recipe for the use of tar water followed by much philosophical disquisition. The remedy, which was afterwards praised by the poet Dyer in The Fleece, became instantly popular. 'We are now mad about the water,' Horace Walpole wrote; 'the book contains every subject from tar water to the Trinity; however, all the women read it, and understand it no more than if it were intelligible.' Editions of Siris followed each other in rapid succession, and it was translated into French and German. The work is that of an enthusiast, and it should be read not for its argument, but for its wealth of suggestiveness, and for what Mr. Balfour calls 'a certain quality of moral elevation and speculative diffidence alien both to the literature and the life of the eighteenth century.' Berkeley had himself the profoundest faith in the panacea which he advocated. 'From my representing tar water,' he writes, 'as good for so many things, some, perhaps, many conclude it is good for nothing. But charity obligeth me to say what I know, and what I think, howsoever it may be taken. Men may conjecture and object as they please, but I appeal to time and experience.'

In his latter days Berkeley, feeling his health failing, desired to resign his bishopric and retire to Oxford, and there—while still bishop of Cloyne, for the king would not accept his resignation—the philosopher, who was blest, to use Shakespeare's fine epithet, with a 'tender-hefted nature,' passed away in 1753, leaving behind him one of the most fragrant of memories.

That Berkeley was a philosophical thinker from his earliest manhood is evident from his Commonplace Book published for the first time in the Clarendon Press edition of his works (vol. iv., pp. 419-502).

He delighted in recondite thought as much as most young men delight in action, and as a philosopher he is said to have commenced his studies with Locke, whose famous Essay appeared in 1690. Of Plato, too, Berkeley was an ardent admirer, and the spirit of Plato pervades his works. His Essay towards a New Theory of Vision contains some intimations of the famous metaphysical theory which was developed a little later in the Treatise on Human Knowledge.

A good deal of foolish ridicule was excited by this book. Berkeley was supposed to maintain the absurd paradox that sensible things do not exist at all. The reader will remember how Dr. Johnson undertook to refute the postulate by striking his foot against a stone, while James Beattie (1735-1803), the poet and moral philosopher, in a volume for which he was rewarded with a pension of £200 a year, denounced Berkeley's philosophy as 'scandalously absurd.' 'If,' he writes, 'I were permitted to propose one clownish question, I would fain ask ... Where is the harm of my believing that if I were to fall down yonder precipice and break my neck, I should be no more a man of this world? My neck, Sir, may be an idea to you, but to me it is a reality, and a very important one too. Where is the harm of my believing that if in this severe weather I were to neglect to throw (what you call) the idea of a coat over the ideas of my shoulders, the idea of cold would produce the idea of such pain and disorder as might possibly terminate in my real death? What great offence shall I commit against God or man, church or state, philosophy or common sense if I continue to believe that material food will nourish me, though the idea of it will not, that the real sun will warm and enlighten me, though the liveliest idea of him will do neither; and that if I would obtain here peace of mind and self-approbation, I must not only form ideas of compassion, justice and generosity, but also really exert those virtues in external performance?'[61]

Beattie continues in this foolish strain to throw contempt upon a system which he had not taken the trouble to understand, and upon one of the sanest and noblest of English philosophers, and he does so without a thought that the absurdity is due to his own ignorance and not to the theory of Berkeley. The author of the Minstrel was an honest man and a respectable poet, but he prided himself too much on what he called common sense, and failed to see that in the search after truth other and even higher faculties may be also needed. Moreover, Berkeley, so far from being an enemy to common sense, endeavours, as he says, to vindicate it, although in so doing, he 'may perhaps be obliged to use some ambages and ways of speech not common.' A significant passage may be quoted from the Three Dialogues between Hylas and Philonous (1713) in illustration of his method and style so far indeed as a short extract can illustrate an argument sustained by a long course of reasoning.