the same truth actualiter and explicite, and therefore, in this sense, is related to art as wine to grapes. What it promises to supply would be, as it were, an already realised and clear gain, a firm and abiding possession; while that which proceeds from the achievements and works of art is one which has constantly to be reproduced anew. Therefore, however, it makes demands, not only upon those who produce its works, but also upon those who are to enjoy them which are discouraging and hard to comply with. Therefore its public remains small, while that of art is large.
The co-operation of the beholder, which is referred to above, as demanded for the enjoyment of a work of art, depends partly upon the fact that every work of art can only produce its effect through the medium of the fancy; therefore it must excite this, and can never allow it to be left out of the play and remain inactive. This is a condition of the æsthetic effect, and therefore a fundamental law of all fine arts. But it follows from this that, through the work of art, everything must not be directly given to the senses, but rather only so much as is demanded to lead the fancy on to the right path; something, and indeed the ultimate thing, must always be left over for the fancy to do. Even the author must always leave something over for the reader to think; for Voltaire has very rightly said, "Le secret d'être ennuyeux, c'est de tout dire." But besides this, in art the best of all is too spiritual to be given directly to the senses; it must be born in the imagination of the beholder, although begotten by the work of art. It depends upon this that the sketches of great masters often effect more than their finished pictures; although another advantage certainly contributes to this, namely, that they are completed offhand in the moment of conception; while the perfected painting is only produced through continued effort, by means of skilful deliberation and persistent intention, for the inspiration cannot last till it is completed. From the fundamental æsthetical law we are speaking of, it is
