Locke, at the time of his father's death and his entrance on college office, was in his twenty-ninth year. At the election of college officers on Christmas Eve, 1662, he was transferred from the Greek Lectureship to the Lectureship in Rhetoric, and, on the 23rd of December in the following year, he was again transferred to another office. This office was the Censorship of Moral Philosophy (the Senior Censorship); the Censorship of Natural Philosophy (the Junior Censorship) he appears never to have held. On the 23rd of December, 1665, he is no longer in office, being now merely one of the twenty senior M.A. students, called "Theologi," who were bound to be in priests' orders. Of the manner in which Locke discharged his duties as a lecturer we have no record. He seems also to have served in the capacity of tutor to several undergraduates at this period, but of his relations to his pupils we, unfortunately, know next to nothing.

How is it that Locke, holding a clerical studentship, was not a clergyman? The disturbed condition of the Church and the Universities during the last quarter of a century had probably led to great laxity in the enforcement of college statutes and by-laws. Moreover, for a time, it would seem, he seriously contemplated taking the step of entering holy orders, and the authorities of his college would probably be unwilling to force upon him a hasty decision. At length, however, he finally abandoned this idea, deciding in favour of the profession of physic. In the ordinary course he would have forfeited his studentship, but he was fortunate to obtain a royal dispensation (by no means an uncommon mode of intervention at that time), retaining him in his place, "that he may still have further time to prosecute his studies." This dispensation is dated Nov. 14, 1666.

Meanwhile, Locke had paid his first visit to the Continent. The occasion of it was an embassy to the Elector of Brandenburg, whose alliance or neutrality it was sought to obtain in the then pending war with Holland. Sir Walter Vane was head of the embassy, and Locke, who probably owed his nomination to the interest of his old schoolfellow, William Godolphin, was appointed secretary. They left England in the middle of November, 1665, and arrived at Cleve, the capital of Brandenburg, on the 30th of the same month (Dec. 9, N.S.). Here they remained for two months, the mission coming to nothing, in consequence of the English Government being unable or unwilling to advance the money which the Elector required as the price of his adhesion. The state-papers addressed by the Ambassador to the Government at home are mainly in Locke's handwriting; but far more interesting than these are the private letters addressed by Locke to his friends, Mr. Strachey, of Sutton Court, near Bristol, and the celebrated Robert Boyle. These are full of graphic touches descriptive of the manners and peculiarities of the people among whom he found himself. Like a conscientious sight-seer, he availed himself of the various opportunities of observing their eating and drinking, attended their devotions—whether Catholic, Calvinist, or Lutheran—submitted himself to be bored by poetasters and sucking theologians, and consoled himself for the difficulty of finding a pair of gloves by noting the tardiness of German commerce. Though he had "thought for a while to take leave of all University affairs," he found himself ridden pitilessly by an "academic goblin."

"I no sooner was got here, but I was welcomed with a divinity disputation. I was no sooner rid of that, but I found myself up to the ears in poetry, and overwhelmed in Helicon." "But my University goblin left me not so; for the next day, when I thought I had been rode out only to airing, I was had to a foddering of chopped hay or logic, forsooth! Poor materia prima was canvassed cruelly; stripped of all the gay dress of her forms, and shown naked to us, though, I must confess, I had not eyes good enough to see her. The young monks (which one would not guess by their looks) are subtle people, and dispute as eagerly for materia prima as if they were to make their dinner on it, and, perhaps, sometimes it is all their meal, for which others' charity is more to be blamed than their stomachs.... The truth is, here hog-shearing is much in its glory, and our disputing in Oxford comes as far short of it as the rhetoric of Carfax does that of Billingsgate."

At a dinner, described with a good deal of humour, with the Franciscan friars, he was still pursued by his Oxford recollections:

"The prior was a good plump fellow, that had more belly than brains; and methought was very fit to be reverenced, and not much unlike some head of a college."

One circumstance Locke noticed much to the advantage of the foreigners, namely, their good-natured toleration for each other's opinions. Writing to Boyle, he says—

"The distance in their churches gets not into their houses. They quietly permit one another to choose their way to heaven; for I cannot observe any quarrels or animosities amongst them upon the account of religion. This good correspondence is owing partly to the power of the magistrate, and partly to the prudence and good-nature of the people, who, as I find by inquiring, entertain different opinions without any secret hatred or rancour."

And though, like most Englishmen, of decided Protestant convictions, travelling on the Continent for the first time, Locke indulged in a good deal of merriment at the Catholic ceremonies, he pays, in one of his letters to Strachey, a cheerful tribute to the personal worth of the Catholic priests. He had not met, he says, with any people so good-natured or so civil, and he had received many courtesies from them, which he should always gratefully acknowledge.

Locke returned to England towards the end of February, 1665-66, and was at once offered the post of secretary to the Earl of Sandwich, who was on the point of setting out as ambassador to Spain. He wavered for a short time, but, though doubtful whether he had not "let slip the minute that they say every one has once in his life to make himself," he finally declined the offer. Before settling down again in Oxford, he spent a few weeks in Somersetshire, paying probably, amongst other visits, one he had promised himself to Strachey at Sutton Court, "a greater rarity than my travels have afforded me; for one may go a long way before one meets a friend." During his stay in Somersetshire, he attempted to try some experiments in the Mendip lead-mines with a barometer which had been sent to him for the purpose by Boyle. But the miners and their wives made a successful resistance. "The sight of the engine and my desire of going down some of their gruffs gave them terrible apprehensions. The women, too, were alarmed, and think us still either projectors or conjurors."

At the beginning of May, Locke was again in his rooms in Oxford. He seems to have lost no time in setting to work afresh on the studies which might qualify him to exercise the profession of medicine. In his letters to Boyle, he makes frequent reference to chemical experiments and to collecting plants for medical purposes.

It is an unexplained circumstance that, notwithstanding a letter to the Hebdomadal Board from Lord Clarendon, then Chancellor of the University, signifying his assent to a dispensation, enabling Locke to accumulate the degrees of Bachelor and Doctor in Medicine, he never took those degrees. The obstacle may have arisen from himself, or, more probably, it may have been due to some sinister influence on the Hebdomadal Board preventing the assent of that body to the required decree. Any way, it is curious that eleven days after the date of Lord Clarendon's letter is dated the dispensation from the Crown (already referred to on page 13), enabling him to retain his studentship, notwithstanding his neglect to enter holy orders.

During the summer of 1666, we are introduced to one of the turning-points in Locke's life—his first acquaintance with Lord Shaftesbury, or, as he then was, Lord Ashley. Of the chequered career or the enigmatical character of this celebrated nobleman it is no part of my task to speak. It is enough to say that, as an advocate of religious toleration and an opponent alike of sacerdotal claims in the Church and absolutist principles in the State, he appealed to Locke's warmest and deepest sympathies. The acquaintance was made through David Thomas, an Oxford physician, and the occasion of it was Lord Ashley's coming to Oxford to drink the Astrop waters. The duty of providing these waters (Astrop being a village at some distance from Oxford) seems to have been entrusted by Thomas to Locke, but, there having been some miscarriage, Locke waited on Lord Ashley to excuse the delay. "My lord," says Lady Masham, "in his wonted manner, received him very civilly, accepting his excuse with great easiness, and, when Mr. Locke would have taken his leave of him, would needs have him to stay supper with him, being much pleased with his conversation. But if my lord was pleased with the company of Mr. Locke, Mr. Locke was yet more so with that of my Lord Ashley." The result of this short and apparently accidental interview was the beginning of an intimate friendship, which seems never afterwards to have been broken, and which exercised a decisive influence on the rest of Locke's career.

On September 2 of this year broke out the Great Fire of London, which raged without intermission for three days and nights. Under the date of September 3 we find in Locke's "Register," which was afterwards published in Boyle's General History of the Air, this curious entry:—"Dim reddish sunshine. This unusual colour of the air, which, without a cloud appearing, made the sunbeams of a strange red dim light, was very remarkable. We had then heard nothing of the fire of London; but it appeared afterwards to be the smoke of London, then burning, which, driven this way by an easterly wind, caused this odd phenomenon." The Register, in which this entry is made begins on June 24, 1666, and contains, with many intermissions, the observations made by Locke, in Oxford and London, up to June 30, 1683, on the readings of the "thermoscope," the "baroscope," and the "hygroscope," together with the direction of the wind and the state of the weather. It not only affords valuable evidence of Locke's whereabouts at different times, but also shows the interest which he took in physical research.

In the early summer of 1667, Locke appears to have taken up his residence with Lord Ashley in London, and "from that time," according to Lady Masham, "he was with my Lord Ashley as a man at home, and lived in that family much esteemed, not only by my lord, but by all the friends of the family." His residence in Lord Ashley's family was, however, probably broken by occasional visits to Oxford.

To this period of Locke's life may be assigned the unpublished Essay concerning Toleration, which, with so much other valuable matter, is now for the first time accessible to the general reader in Mr. Fox-Bourne's Life. This Essay, it is not improbable, was written at the suggestion, or for the guidance of Lord Ashley, and so may have been widely circulated amongst the advocates of "toleration" and "comprehension"—words which were at that time in the mouth of every man who took any interest in religion or politics. As I shall have to speak expressly of the published Letters on Toleration, which were written about twenty years later, and which contain substantially the same views as this earlier Essay, I shall not here detain the reader further than by giving him the general conclusions at which Locke had now arrived. These may be stated summarily under three heads: first, "all speculative opinions and religious worship have a clear title to universal toleration," and in these every man may use "a perfect uncontrollable liberty, without any guilt or sin at all, provided always that it be all done sincerely and out of conscience to God, according to the best of his knowledge and persuasion;" secondly, "there are some opinions and actions which are in their natural tendency absolutely destructive to human society—as, that faith may be broken with heretics; that one is bound to broach and propagate any opinion he believes himself; and such like; and, in actions, all manner of frauds and injustice—and these the magistrate ought not to tolerate at all;" thirdly, another class of opinions and actions, inasmuch as their "influence to good or bad" depends on "the temper of the state and posture of affairs," "have a right to toleration so far only as they do not interfere with the advantages of the public, or serve any way to disturb the government." The practical result of the discussion is, that while "papists" should not "enjoy the benefit of toleration, because where they have power they think themselves bound to deny it to others," the "fanatics," as the various classes of Protestant Dissenters were then called, should be at least "tolerated," if not "comprehended" in the national Church. Indeed, as to "comprehension," Locke lays down the general principle that "your articles in speculative opinions should be few and large, and your ceremonies in worship few and easy—which is latitudinism."

This must have been one of the quietest and happiest periods of Locke's life. He seems to have been unobtrusively pursuing his studies, and gradually making the acquaintance of the great world and of public affairs through the facilities which his residence with Lord Ashley afforded him. Both his own occupations and his relations to the Ashley family appear to have been of a very miscellaneous kind. Medicine, philosophy, and politics engaged his attention by turns. To Lord Ashley and his family he was at once general adviser, doctor, and friend. In June, 1668, after consulting various other medical men, he performed on Lord Ashley a difficult operation for the purpose of removing an "imposthume in the breast," and is said thus to have saved his life. To the only child, Anthony Ashley, he acted as tutor. But, by the time the youth was seventeen, Locke was entrusted with a far more delicate business than his tuition. This was no less than finding him a wife. After other young ladies had been considered and rejected, Locke accompanied his charge on a visit to the Earl of Rutland, at Belvoir Castle, and negotiated a match with the Earl's daughter, the Lady Dorothy Manners. The match seems to have been a happy one; and Locke continued his services of general utility to the Ashley family by acting on more than one occasion as Lady Dorothy's medical attendant. On the 26th of February, 1670-71, he assisted at the birth of a son and heir, Anthony, who subsequently became third Earl of Shaftesbury, and who, as the author of the Characteristics, occupies a position of no inconsiderable importance in the history of English philosophy. It is on the evidence of this Earl of Shaftesbury that we learn the share taken by Locke in effecting the union of his father and mother. "My father was too young and inexperienced to choose a wife for himself, and my grandfather too much in business to choose one for him." The consequence was, that "all was thrown upon Mr. Locke, who being already so good a judge of men, my grandfather doubted not of his equal judgment in women. He departed from him, entrusted and sworn, as Abraham's head servant 'that ruled over all that he had,' and went into a far country 'to seek for his son a wife,' whom he as successfully found."

Though so much of Locke's time seems to have been spent on medical studies and practice, he possessed no regular qualification. In 1670 another attempt had been made, but in vain, to procure him the Doctor of Medicine's degree from the University of Oxford. Lord Ashley successfully enlisted the good services of the Duke of Ormond, the Chancellor of the University; but on learning the opposition of Dean Fell and Dr. Allestree, Locke desired his patron to withdraw the application. Both now and on the former occasion, alluded to above (p. 16), the opposition was probably based on Locke's tendencies, known or suspected, to liberal views in religion; nor would the connexion with Lord Ashley be at all likely to mitigate the sternness of the college and university authorities. It had, of course, all along been open to him to proceed to the Doctor's degree in the ordinary way, by attending lectures and performing exercises; and whether he was prevented from doing so by the tediousness of the process, by the hope of attaining the degree through a shorter and easier method, or by a certain amount of indecision as to whether after all he would adopt the medical profession, we cannot say. Afterwards, we shall see, he proceeded to the degree of Bachelor of Medicine, but whether in the ordinary course, or by dispensation, is not known.

As connected with Locke's medical pursuits, I may here mention his friendship with Sydenham. We do not know when the acquaintance commenced, but Sydenham writing to Boyle, so early as April 2, 1668, speaks of "my friend Mr. Locke." That Sydenham entertained great respect for the medical skill and judgment of Locke—who appears to have accompanied him in his visits to his patients, and, in turn, to have availed himself of Sydenham's assistance in attending the Ashley household—there can be no doubt. Writing to Mapletoft, their common friend, and a physician of some eminence, in 1676, he says: "You know how thoroughly my method [of curing fevers] is approved of by an intimate and common friend of ours, and one who has closely and exhaustively examined the subject—I mean Mr. John Locke, a man whom, in the acuteness of his intellect, in the steadiness of his judgment, and in the simplicity, that is, in the excellence, of his manners, I confidently declare to have amongst the men of our own time few equals and no superior." A number of notes and papers, still extant, attest the interest which Locke now took in medical studies, and the hopes with which he looked forward to improvements in medical practice. That the sympathy between him and Sydenham was very close, is evident from the writings of both.

But, meanwhile, he was also busy with other pursuits. One of these was the administration, under Ashley, and the other "lords proprietors," of the colony of Carolina. In 1663 this colony had been granted by Charles the Second to eight "lords proprietors," of whom Ashley was one. Locke, when he went to live in Ashley's family, appears to have become, though without any formal appointment, a sort of chief secretary and manager to the association. A vast amount of miscellaneous business seems to have been transacted by him in this capacity; but what to us would be most interesting, if we could determine it, would be the share he took in drawing up the document entitled "The Fundamental Constitutions of Carolina," issued on the 1st of March, 1669-70. Many of the articles, embodying, as they do, a sort of modified feudalism, must have been distasteful to Locke, and it is hardly possible to suppose that he was the originator of them. But perhaps we may trace his hand in the articles on religion, between which and his views, as stated in his unpublished papers written before and his published works written after this time, there is a large amount of correspondence. No man was to be permitted to be a freeman of Carolina unless he acknowledged a God, and agreed that God was to be publicly and solemnly worshipped. But within these limits any seven persons might constitute a church, provided that they upheld the duty of every man, if called on, to bear witness to the truth, and agreed on some external symbol by which such witness might be signified. Any one, however, who did not belong to some such communion was to be regarded as outside the protection of the law. The members of one church were not to molest or persecute those of another; and no man was to "use any reproachful, reviling, or abusive language against the religion of any church or profession, that being the certain way of disturbing the peace, and of hindering the conversion of any to the truth." Amongst the miscellaneous provisions in this code is one strictly forbidding any one to plead before a court of justice for money or reward; and another, enacting that "every freeman of Carolina shall have absolute power and authority over his negro slaves, of what opinion or religion soever."

In 1668 Locke was elected a Fellow of the Royal Society, and in 1669 and 1672 was placed on the Council, but he never appears to have taken much part in the proceedings of the society. On the other hand, there seem to have been certain less formal meetings of a few friends, constituting possibly a sort of club, in the discussions of which he took a more active share. It was at one of these meetings that the conversation took place which led to Locke's writing his famous Essay (see page 127). According to a marginal note made by Sir James Tyrrell in his copy of the first edition, now in the British Museum, the discussion on this occasion turned on "the principles of morality and revealed religion." The date of this memorable meeting was, according to the same authority, the winter of 1673; but according to Lady Masham, it was 1670 or 1671. Any way, there is an entry on the main subject of the Essay in Locke's Common-place Book, beginning "Sic cogitavit de intellectu humano Johannes Locke, anno 1671." In this brief entry the origin of all knowledge is referred to sense, and "sensible qualities" are stated to be "the simplest ideas we have, and the first object of our understanding"—a theory which, as we shall hereafter see, was supplemented in the Essay by the addition to the ultimate sources of knowledge of simple ideas of reflection. The Essay itself was not published till nearly twenty years after this date, in 1690.

Locke's health had never been strong, and, in the years 1670-72 he seems to have suffered much from a troublesome cough, indicative of disease of the lungs. Connected with this illness was a short journey which he made in France, in the suite of the Countess of Northumberland, in the autumn of 1672. Soon after his return, his patron, who had lately been created Earl of Shaftesbury, was appointed to the highest office of the State, the Lord High Chancellorship of England. Locke shared in his good fortune, and was made Secretary of Presentations—that is, of the Chancellor's church patronage—with a salary of 300l. a year. The modern reader, especially when he recollects Locke's intimacy with Shaftesbury, is surprised to find that he dined at the Steward's table, that he was expected to attend prayers three times a day, and that, when the Chancellor drove out in state, he was accustomed, with the other secretaries, to walk by the side of the coach, while, as "my lord" got in and out, he "went before him bareheaded." The distinctions of rank were, however, far more marked in those days than at present, and the high officers of state were still surrounded with much of the elaborate ceremonial which had obtained in the times of the Tudors.

To the period of Locke's excursion in France, or that immediately succeeding it, we may refer a free translation—or rather, adaptation—of three of the Essais de Morale of Pierre Nicole, a well-known Jansenist, and the friend of Pascal and Arnauld. These Essays, which were translated for the use of the Countess of Shaftesbury, were apparently not designed for publication, and, in fact, were first given to the world by Dr. Hancock, in 1828. They are mainly remarkable as affording evidence of the depth and sincerity of Locke's religious convictions.

Routine and official duties now occupied much of his time, and must have interfered sadly with his favourite studies. From discussing the tangled and ambiguous politics of this period I purposely refrain; but there is one official act, recorded of Locke at this time, which places him in so incongruous a light that his biographer can hardly pass it over in silence. At the opening of the Parliament which met on February 4, 1672-73, Shaftesbury, amplifying the King's Speech, made, though it is said unwillingly and with much concern, his famous defence of the Dutch war, and his attack on the Dutch nation, culminating in the words "Delenda est Carthago." Locke, we are sorry to find, though the act was a purely ministerial one, stood at his elbow with a written copy, to prompt him in case of failure.

On the 9th of November, 1673, Shaftesbury, who had incurred the displeasure of the king by his support of the Test Bill, and who was now looked on as one of the principal leaders of the Anti-Catholic party, was summarily dismissed from the Chancellorship. Locke, of course, lost at the same time the Secretaryship of Presentations; but he did not, as meaner men might have done, try to insinuate himself into wealth and power through other avenues. "When my grandfather," says the third Earl of Shaftesbury, "quitted the Court, and began to be in danger from it, Mr. Locke now shared with him in dangers, as before in honours and advantages. He entrusted him with his secretest negotiations, and made use of his assistant pen in matters that nearly concerned the State and were fit to be made public."

Locke's connexion with the affairs of the colony of Carolina has already been mentioned. Business of this kind, owing to his relations with Shaftesbury, multiplied upon him, and on the 15th of October, 1673, shortly before Shaftesbury's fall, he was sworn in as Secretary to the Council of Trade and Foreign Plantations, with a salary of 500l. a year. This office he retained, notwithstanding the fall of his patron, till the dissolution of the Council on the 12th of March, 1674-75; but it appears that his salary was never paid.

On February 6, 1674-75, Locke proceeded to the degree of Bachelor of Medicine, having already been appointed to, or more probably promised, a Faculty Studentship at Ch. Ch., or, as Dean Prideaux, who had no love for him, puts it, "having wriggled into Ireland's faculty place." It is curious that his name does not appear in the Ch. Ch. books among the Faculty Students till the second quarter of 1675, and during that and the two subsequent quarters it is erased. The first time the name occurs without an erasure is in the first quarter of 1676. That there was much irregularity in the mode of appointing to College places at this time is evident. His studentship being now secure, Lord Shaftesbury having, for a consideration in ready money, granted him an annuity of 100l. a year, and his estates in Somersetshire, as well as one or two loans and mortgages, bringing him in a modest sum in addition, Locke, notwithstanding the non-payment of his salary as Secretary to the Council of Trade and Plantations, must have been in fairly comfortable circumstances. He was dispensed from the necessity of practising a profession, and, being also relieved from the pressure of public affairs, was free to follow his bent. It is probably to the leisure almost enforced upon him by the weakness of his health, as well as by the turn which public affairs had taken, and rendered possible by the independence of his position, that we are indebted for the maturity of reflection which forms so characteristic a feature of his subsequent writings.