If memory do not chain down these hurrying fading children of the imagination, and

Snatch the faithless fugitives to light

with the beams of the morning, the mind suddenly finds itself forsaken and solitary.[A] ROUSSEAU has uttered a complaint on this occasion. Full of enthusiasm, he devoted to the subject of his thoughts, as was his custom, the long sleepless intervals of his nights. Meditating in bed with his eyes closed, he turned over his periods in a tumult of ideas; but when he rose and had dressed, all was vanished; and when he sat down to his breakfast he had nothing to write. Thus genius has its vespers and its vigils, as well as its matins, which we have been so often told are the true hours of its inspiration; but every hour may be full of inspiration for him who knows to meditate. No man was more practised in this art of the mind than POPE, and even the night was not an unregarded portion of his poetical existence, not less than with LEONARDO DA VINCI, who tells us how often he found the use of recollecting the ideas of what he had considered in the day after he had retired to bed, encompassed by the silence and obscurity of the night. Sleepless nights are the portion of genius when engaged in its work; the train of reasoning is still pursued; the images of fancy catch a fresh illumination; and even a happy expression shall linger in the ear of him who turns about for the soft composure to which his troubled spirit cannot settle.

[Footnote A: One of the most extraordinary instances of inspiration in dreams is told of Tartini, the Italian musician, whose "Devil's Sonata" is well known to musicians. He dreamed that the father of evil played this piece to him, and upon waking he put it on paper. It is a strange wild performance, possessing great originality and vigour.—ED.]

But while with genius so much seems fortuitous, in its great operations the march of the mind appears regular, and requires preparation. The intellectual faculties are not always co-existent, or do not always act simultaneously. Whenever any particular faculty is highly active, while the others are languid, the work, as a work of genius, may be very deficient. Hence the faculties, in whatever degree they exist, are unquestionably enlarged by meditation. It seems trivial to observe that meditation should precede composition, but we are not always aware of its importance; the truth is, that it is a difficulty unless it be a habit. We write, and we find we have written ill; we re-write, and feel we have written well: in the second act of composition we have acquired the necessary meditation. Still we rarely carry on our meditation so far as its practice would enable us. Many works of mediocrity might have approached to excellence, had this art of the mind been exercised. Many volatile writers might have reached even to deep thinking, had they bestowed a day of meditation before a day of composition, and thus engendered their thoughts. Many productions of genius have originally been enveloped in feebleness and obscurity, which have only been brought to perfection by repeated acts of the mind. There is a maxim of Confucius, which in the translation seems quaint, but which is pregnant with sense—

Labour, but slight not meditation;
Meditate, but slight not labour.

Few works of magnitude presented themselves at once, in their extent and with their associations, to their authors. Two or three striking circumstances, unobserved before, are perhaps all which the man of genius perceives. It is in revolving the subject that the whole mind becomes gradually agitated; as a summer landscape, at the break of day, is wrapped in mist: at first, the sun strikes on a single object, but the light and warmth increasing, the whole scene glows in the noonday of imagination. How beautifully this state of the mind, in the progress of composition, is described by DRYDEN, alluding to his work, "when it was only a confused mass of thoughts, tumbling over one another in the dark; when the fancy was yet in its first work, moving the sleeping images of things towards the light, there to be distinguished, and then either to be chosen or rejected by the judgment!" At that moment, he adds, "I was in that eagerness of imagination which, by over-pleasing fanciful men, flatters them into the danger of writing." GIBBON tells us of his history, "At the onset all was dark and doubtful; even the title of the work, the true era of the decline and fall of the empire, &c. I was often tempted to cast away the labour of seven years." WINCKELMANN was long lost in composing his "History of Art;" a hundred fruitless attempts were made, before he could discover a plan amidst the labyrinth. Slight conceptions kindle finished works. A lady asking for a few verses on rural topics of the Abbé de Lille, his specimens pleased, and sketches heaped on sketches produced "Les Jardins." In writing the "Pleasures of Memory," as it happened with "The Rape of the Lock," the poet at first proposed a simple description in a few lines, till conducted by meditation the perfect composition of several years closed in that fine poem. That still valuable work, L'Art de Penser of the Port-Royal, was originally projected to teach a young nobleman all that was practically useful in the art of logic in a few days, and was intended to have been written in one morning by the great ARNAULD; but to that profound thinker so many new ideas crowded in that slight task, that he was compelled to call in his friend NICOLLE; and thus a few projected pages closed in a volume so excellent, that our elegant metaphysician has recently declared, that "it is hardly possible to estimate the merits too highly." Pemberton, who knew NEWTON intimately, informs us that his Treatise on Natural Philosophy, full of a variety of profound inventions, was composed by him from scarcely any other materials than the few propositions he had set down several years before, and which having resumed, occupied him in writing one year and a half. A curious circumstance has been preserved in the life of the other immortal man in philosophy, Lord BACON. When young, he wrote a letter to Father Fulgentio concerning an Essay of his, to which he gave the title of "The Greatest Birth of Time," a title which he censures as too pompous. The Essay itself is lost, but it was the first outline of that great design which he afterwards pursued and finished in his "Instauration of the Sciences." LOCKE himself has informed us, that his great work on "The Human Understanding," when he first put pen to paper, he thought "would have been contained in one sheet, but that the farther he went on, the larger prospect he had." In this manner it would be beautiful to trace the history of the human mind, and observe how a NEWTON and a BACON and a LOCKE were proceeding for thirty years together, in accumulating truth upon truth, and finally building up these fabrics of their invention.

Were it possible to collect some thoughts of great thinkers, which were never written, we should discover vivid conceptions, and an originality they never dared to pursue in their works! Artists have this advantage over authors, that their virgin fancies, their chance felicities, which labour cannot afterwards produce, are constantly perpetuated; and those "studies," as they are called, are as precious to posterity as their more complete designs. In literature we possess one remarkable evidence of these fortuitous thoughts of genius. POPE and SWIFT, being in the country together, observed, that if contemplative men were to notice "the thoughts which suddenly present themselves to their minds when walking in the fields, &c., they might find many as well worth preserving as some of their more deliberate reflections." They made a trial, and agreed to write down such involuntary thoughts as occurred during their stay there. These furnished out the "Thoughts" in Pope's and Swift's Miscellanies.[A] Among Lord Bacon's Remains, we find a paper entitled "Sudden Thoughts, set down for Profit." At all hours, by the side of VOLTAIRE'S bed, or on his table, stood his pen and ink with slips of paper. The margins of his books were covered with his "sudden thoughts." CICERO, in reading, constantly took notes and made comments. There is an art of reading, as well as an art of thinking, and an art of writing.

[Footnote A: This anecdote is found in Ruffhead's "Life of Pope," evidently given by Warburton, as was everything of personal knowledge in that tasteless volume of a mere lawyer, who presumed to write the life of a poet.]

The art of meditation may be exercised at all hours, and in all places; and men of genius, in their walks, at table, and amidst assemblies, turning the eye of the mind inwards, can form an artificial solitude; retired amidst a crowd, calm amidst distraction, and wise amidst folly. When DOMENICHINO was reproached for his dilatory habits, in not finishing a great picture for which he had contracted, his reply described this method of study: Eh! lo la sto continuamente dipingendo entro di me—I am continually painting it within myself. HOGARTH, with an eye always awake to the ridiculous, would catch a character on his thumb-nail. LEONARDO DA VINCI has left a great number of little books which lie usually carried in his girdle, that he might instantly sketch whatever he wished to recal to his recollection; and Amoretti discovered, that, in these light sketches, this fine genius was forming a system of physiognomy which he frequently inculcated to his pupils.[A] HAYDN carefully noted down in a pocket-book the passages and ideas which came to him in his walks or amid company. Some of the great actions of men of this habit of mind were first meditated on amidst the noise of a convivial party, or the music of a concert. The victory of Waterloo might have been organized in the ball-room at Brussels: and thus RODNEY, at the table of Lord Sandwich, while the bottle was briskly circulating, being observed arranging bits of cork, and his solitary amusement having excited inquiry, said that he was practising a plan to annihilate an enemy's fleet. This proved to be that discovery of breaking the line, which the happy audacity of the hero afterwards executed. What situation is more common than a sea-voyage, where nothing presents itself to the reflections of most men than irksome observations on the desert of waters? But the constant exercise of the mind by habitual practice is the privilege of a commanding genius, and, in a similar situation, we discover CICERO and Sir WILLIAM JONES acting alike. Amidst the Oriental seas, in a voyage of 12,000 miles, the mind of JONES kindled with delightful enthusiasm, and he has perpetuated those elevating feelings in his discourse to the Asiatic Society; so CICERO on board a ship, sailing slowly along the coast, passing by a town where his friend Trebatius resided, wrote a work which the other had expressed a wish to possess, and of which wish the view of the town had reminded him.