In the _Lettres Provinciales_ PASCAL created French prose--the French prose that we know to-day, the French prose which ranks by virtue of its vigour, elegance and precision as a unique thing in the literature of the world. Earlier prose-writers--Joinville, Froissart, Rabelais, Montaigne--had been in turns charming, or picturesque, or delicate, or overflowing with vitality; but none had struck upon the really characteristically French note. They lacked form, and those fine qualities of strength and clarity which form alone can give. Their sentences were indeterminate--long, complex, drifting, and connected together by conjunctions into a loose aggregate. The 'Precious' writers had dimly realized the importance of form, but they had not realized at all the importance of simplicity. This was Pascal's great discovery. His sentences are clear, straightforward, and distinct; and they are bound together into a succession of definitely articulated paragraphs, which are constructed, not on the system of mere haphazard aggregation, but according to the logical development of the thought. Thus Pascal's prose, like the verse of Malherbe and Corneille, is based upon reason; it is primarily intellectual. But, with Pascal, the intellect expresses itself even more exactly. The last vestiges of medieval ambiguities have been discarded; the style is perfectly modern. So wonderfully did Pascal master the resources of the great instrument which he had forged, that it is true to say that no reader who wishes to realize once for all the great qualities of French prose could do better than turn straight to the _Lettres Provinciales_. Here he will find the lightness and the strength, the exquisite polish and the delicious wit, the lambent irony and the ordered movement, which no other language spoken by man has ever quite been able to produce. The _Lettres_ are a work of controversy; their actual subject-matter--the ethical system of the Jesuits of the time--is remote from modern interests; yet such is the brilliance of Pascal's art that every page of them is fascinating to-day. The vivacity of the opening letters is astonishing; the tone is the gay, easy tone of a man of the world; the attack is delivered in a rushing onslaught of raillery. Gradually, as the book proceeds, there are signs of a growing seriousness; we have a sense of graver issues, and round the small question of the Jesuits' morality we discern ranged all the vast forces of good and evil. At last the veil of wit and laughter is entirely removed, and Pascal bursts forth into the full fury of invective. The vials of wrath are opened; a terrific denunciation rolls out in a thundering cataract; and at the close of the book there is hardly a note in the whole gamut of language, from the airiest badinage to the darkest objurgation, which has not been touched.