There is small propriety in speaking of these men of the first half of the twelfth century as Platonists or Aristotelians; nor is there great interest in trying to find in Plato or Aristotle or Plotinus the specific origin of any of their thoughts. They were apt to draw on the source nearest and most convenient; and one must remember that their immediate philosophic antecedents were not the distinct systems of Plato and Aristotle and Plotinus, but rather the late pagan eras of eclecticism, followed by that strongly motived syntheticism of the Church Fathers which selected whatever might accord with their Christian scheme. So Abaelard must not be called an Aristotelian. Neither he nor his contemporaries knew what an Aristotelian was, and when they called Abaelard Peripateticus, they meant one skilled in the logic which was derived from the simpler treatises of Aristotle’s Organon. Nor will we call Hugo a Platonist, in spite of his fine affinities with Plato; for many of Hugo’s thoughts, his classification of the sciences for example, pointed back to Aristotle.

Abaelard, Hugo, St. Bernard suggest the triangulation of the epoch’s intellectual interests. Peter Lombard, somewhat their junior, presents its compend of accepted and partly digested theology. He took his method from Abaelard, and drew whole chapters of his work from Hugo; but his great source, which was also theirs, was Augustine. The Lombard was, and was to be, a representative man; for his Sentences brought together the ultimate problems which exercised the minds of the men of his time and after.

The early and central decades of the twelfth century offer other persons who may serve to round out our general notion of the character of the intellectual interests which occupied the period before the rediscovery of Aristotle, that is, of the substantial Aristotelian encyclopaedia of knowledge. Among such Adelard of Bath (England) was somewhat older than Abaelard. His keen pursuit of knowledge made him one of its early pilgrims to Spain and Greece. He compiled a book of Quaestiones naturales, and another called De eodem et diverso,[504] in which he struggled with the problem of universals, and with palpable problems of psychology. His cosmology shows a genial culling from the Timaeus fragment of Plato, and such other bits of Greek philosophy as he had access to.

Adelard was influenced by the views of men who taught or studied at Chartres. Bernard of Chartres, the first of the great Chartrian teachers of the early twelfth century,[505] wrote on Porphyry, and after his death was called by John of Salisbury perfectissimus inter Platonicos saeculi nostri. He was one of those extreme realists whose teachings might bear pantheistic fruit in his disciples; he had also a Platonistic imagination, leading him to see in Nature a living organism. Bernard’s younger brother, Thierry, also called of Chartres, extended his range of studies, and compiled numerous works on natural knowledge, indicating his wide reading and receptive nature. His realism brought him very close to pantheism, which indeed flowered poetically in his admirer or pupil, Bernard Silvestris of Tours.

If we should analyze the contents of the latter’s De mundi universitate, it might be necessary to affirm that the author was a dualistic thinker, in that he recognized two first principles, God and matter; and also that he was a pantheist, because of the way in which he sees in God the source of Nature: “This mind (nous) of the supreme God is soul (intellectus), and from its divinity Nature is born.”[506] One should not, however, drive the heterogeneous thoughts of these twelfth-century people to their opposite conclusions. A moderate degree of historical insight should prevent our interpreting their gleanings from the past by formulas of our own greater knowledge. Doubtless their books—Hugo’s as well as Thierry’s and Bernard Silvester’s—have enough of contradiction if we will probe for it with a spirit not their own. But if we will see with their eyes and perceive with their feelings, we shall find ourselves resting with each of them in some unity of personal temperament; and that, rather than any half-borrowed thought, is Hugo or Thierry or Bernard Silvestris. Silvester’s book, De mundi universitate, sive Megacosmus et microcosmus, is a half poem, like Boëthius’s De consolatione and a number of mediaeval productions to which there has been occasion to allude. It is fruitless to dissect such a composite of prose and verse. In it Natura speaks to Nous, and then Nous to Natura; the four elements come into play, and nine hierarchies of angels; the stars in their firmaments, and the genesis of things on earth; Physics and her daughters, Theorica and Practica, and all the figures of Greek mythology. An analysis of such a book will turn it to nonsense, and destroy the breath of that twelfth-century temperament which loved to gather driftwood from the wreckage of the ancient world of thought. Thus perhaps they expected to draw to themselves, even from the pagan flotsam, some congenial explanation of the universe and man.

A far more acute thinker was Gilbert de la Porrée,[507] who taught at Chartres for a number of years, before advancing upon Paris in 1141. He next became Bishop of Poictiers, and died in 1154. Like Abaelard, he was primarily a logician, and occupied himself with the problem of universals, taking a position not so different from Abaelard’s. Like Abaelard also, Gilbert was brought to task before a council, in which St Bernard sought to be the guiding, scilicet, condemning spirit. But the condemnation was confined to certain sentences, which when cut from their context and presented in distorting isolation, the author willingly sacrificed to the flames. He refused, some time afterwards, to discuss his views privately with the Abbot of Clairvaux, saying that the latter was too inexpert a theologian to understand them. Gilbert’s most famous work, De sex principiis, attempted to complete the last six of Aristotle’s ten Categories, which the philosopher had treated cursorily; it was almost to rival the work of the Stagirite in authority, for instance, with Albertus Magnus, who wrote a Commentary upon it in the same spirit with which he commented on the logical treatises of the Organon.

In the same year with Gilbert (1154) died a man of different mental tendencies, William of Conches,[508] who likewise had been a pupil of Bernard of Chartres. He was for a time the tutor of Henry Plantagenet. William was interested in natural knowledge, and something of a humanist. He made a Commentary on the Timaeus, and wrote various works on the philosophy of Nature, in which he wavered around an atomistic explanation of the world, yet held fast to the Biblical Creation, to save his orthodoxy. He also pursued the study of medicine, which was a specialty at Chartres; through the treatises of Constantinus Africanus[509] he had some knowledge of the pathological theories of Galen and Hippocrates. For his interest in physical knowledge, he may be regarded as a precursor of Roger Bacon. On the other hand, he was a humanist in his strife against those “Cornificiani” who would know no more Latin than was needful;[510] and he compiled from the pagan moralists a sort of Summa. It is called, in fact, a Summa moralium philosophorum (an interesting title, connecting it with the Christian Summae sententiarum).[511] It treats the virtues under the head of de honesto; and under that of de utile, reviews the other good things of mind, body, and estate. It also discusses whether there may be a conflict between the honestum and the utile.

These men of the first half of the twelfth century lived before the new revealing of the Aristotelian philosophy and natural knowledge coming at the century’s close. Their muster is finally completed by two younger men, the one an Englishman and the other a Lowlander. The youthful years of both synchronize with the old age of the men of whom we have been speaking. For John of Salisbury was born not far from the year 1115, and died in 1180; and Alanus de Insulis (Lille) was probably born in 1128, and lived to the beginning of the next century. They are spiritually connected with the older men because they were taught by them, and because they had small share in the coming encyclopaedic knowledge. But they close the group: John of Salisbury closing it by virtue of his critical estimate of its achievement; Alanus by virtue of his final rehandling of the body of intellectual data at its disposal, to which he may have made some slight addition. Abaelard knew and used the simpler treatises of the Aristotelian Organon of logic. He had not studied the Analytics and the Topics, and of course was unacquainted with the body of Aristotle’s philosophy outside of logic. John of Salisbury and Alanus know the entire Organon; but neither one nor the other knows the rest of Aristotle, which Alexander of Hales was the first to make large use of.

John of Salisbury, Little John, Johannes Parvus, as he was called, was the best classical scholar of his time.[512] His was an acute and active intellect, which never tired of hearing and weighing the views of other men. He was, moreover, a man of large experience, travelling much, and listening to all the teachers prominent in his youth. Also he was active in affairs, being at one time secretary to Thibaut, Archbishop of Canterbury, and then the intimate of Becket, of Henry II., and Pope Adrian IV.! A finished scholar, who knew not one thing, but whatever might be known, and was enlightened by the training of the world, Little John critically estimates the learning and philosophy of the men he learns from. Having always an independent point of view he makes acute remarks upon it all, and admirable contributions to the sum of current thought. But chiefly he seems to us as one who looks with even eye upon whatsoever comes within his vision. He knows the weaknesses of men and the limitations of branches of discipline; knows, for instance, that dialectic is sterile by itself, but efficient as an aid to other disciplines. So, as to logic, John keeps his own point of view, and is always reasonable and practical.[513] Likewise, with open mind, he considers what there may be in the alleged science of the Mathematicians, i.e. diviners and astrologers. He uses such phrases as “probabilia quidem sunt haec ... sed tamen the venom lies under the honey!” For this science sets a fatal necessity on things, and would even intrude into the knowledge of the future reserved for God’s majesty. And as John considers the order of events to come, and the diviner’s art, cornua succrescunt—the horns of more than one dilemma grow.[514]

John knew more than any man of the ancient philosophies.[515] For himself, of course he loved knowledge; yet he would not dissever it from its value in the art of living. “Wisdom indeed is a fountain, from which pour forth the streams which water the whole earth; they fill not alone the garden of delights of the divine page, but flow on to the Gentiles, and do not altogether fail even the Ethiopians.... It is certain that the faithful and wise reader, who from love keeps learning’s watch, escapes vice and draws near to life.”[516] Philosophy is the moderatrix omnium (a favourite phrase with John); the true philosopher, as Plato says, is a lover of God: and so philosophia is amor divinitatis. Its precept is to love God with all our strength, and our neighbour as ourselves: “He who by philosophizing has reached charitas, has attained philosophy’s true end.”[517] John goes on to show how deeply they err who think philosophy is but a thing of words and arguments: many of those who multiply words, by so doing burden the mind. Virtue inseparably accompanies wisdom; this is John’s sum of the matter. Clearly he is not always, or commonly, wrestling with ultimate metaphysical problems; he busies himself, acutely but not metaphysically, with the wisdom of life. He too can use the language of piety and contemplation. In the sixth chapter of his De septem septenis (The seven Sevens) he gives the seven grades of contemplation—meditatio, soliloquium, circumspectio, ascensio, revelatio, emissio, inspiratio.[518] He presents the matter succinctly, thus perhaps giving clarity to current pietistic phraseology.