This amount of the infinite in art is not inherent to progress. It may have, and it certainly has, duties to fulfil toward progress, but it is not dependent on it. It is dependent on no perfections which may result from the future, on no transformation of language, on no death or birth of idioms. It has within itself the immeasurable and the innumerable; it cannot be subdued by any occurrence; it is as pure, as complete, as sidereal, as divine in the heart of barbarism as in the heart of civilization. It is the Beautiful, diverse according to the men of genius, but always equal to itself. Supreme. Such is the law, scarcely known, of Art. CHAPTER IV. Science is different. The relative, which governs it, leaves its mark on it; and these successive stamps of the relative, more and more resembling the real, constitute the movable certainty of man. In science, certain things have been masterpieces which are so no more. The hydraulic machine of Marly was a _chef-d'œuvre._ Science seeks perpetual movement. She has found it; it is itself perpetual motion. Science is continually moving in the benefit it confers. Everything stirs up in science, everything changes, everything is constantly renewed. Everything denies, destroys, creates, replaces everything. That which was accepted yesterday is put again under the millstone to-day. The colossal machine, Science, never rests. It is never satisfied; it is everlastingly thirsting for improvement, which the absolute ignores. Vaccination is a problem, the lightning-rod is a problem. Jenner may have erred, Franklin may have deceived himself; let us go on seeking. This agitation is grand. Science is restless around man; it has its own reasons for this restlessness. Science plays in progress the part of utility. Let us worship this magnificent servant. Science makes discoveries, art composes works. Science is an acquirement of man, science is a ladder; one savant overtops the other. Poetry is a lofty soaring. Do you want examples? They abound. Here is one,--the first which occurs to our mind.