§ 49. The truth which lies at the foundation of all that we have hitherto said about art, is that the object of art, the representation of which is the aim of the artist, and the knowledge of which must therefore precede his work as its germ and source, is an Idea in Plato’s sense, and never anything else; not the particular thing, the object of common apprehension, and not the concept, the object of rational thought and of science. Although the Idea and the concept have something in common, because both represent as unity a multiplicity of real things; yet the great difference between them has no doubt been made clear and evident enough by what we have said about concepts in the first book, and about Ideas in this book. I by no means wish to assert, however, that Plato really distinctly comprehended this difference; indeed many of his examples of Ideas, and his discussions of them, are applicable only to concepts. Meanwhile we leave this question alone and go on our own way, glad when we come upon traces of any great and noble mind, yet not following his footsteps but our own aim. The _concept_ is abstract, discursive, undetermined within its own sphere, only determined by its limits, attainable and comprehensible by him who has only reason, communicable by words without any other assistance, entirely exhausted by its definition. The _Idea_ on the contrary, although defined as the adequate representative of the concept, is always object of perception, and although representing an infinite number of particular things, is yet thoroughly determined. It is never known by the individual as such, but only by him who has raised himself above all willing and all individuality to the pure subject of knowing. Thus it is only attainable by the man of genius, and by him who, for the most part through the assistance of the works of genius, has reached an exalted frame of mind, by increasing his power of pure knowing. It is therefore not absolutely but only conditionally communicable, because the Idea, comprehended and repeated in the work of art, appeals to every one only according to the measure of his own intellectual worth. So that just the most excellent works of every art, the noblest productions of genius, must always remain sealed books to the dull majority of men, inaccessible to them, separated from them by a wide gulf, just as the society of princes is inaccessible to the common people. It is true that even the dullest of them accept on authority recognisedly great works, lest otherwise they should argue their own incompetence; but they wait in silence, always ready to express their condemnation, as soon as they are allowed to hope that they may do so without being left to stand alone; and then their long-restrained hatred against all that is great and beautiful, and against the authors of it, gladly relieves itself; for such things never appealed to them, and for that very reason were humiliating to them. For as a rule a man must have