  Lange argues that the various sorts of enjoyments or pleasures [the Danish ‘nydelser’ is ambiguous between the two] given to us by works of art have a few basic sources, including variety [afvekslingen] and the arousal of sympathy. He also stresses the art appreciator’s admiration of the artist’s manifest overcoming of artistic difficulties in the creation of the work. The awareness that very few people, or perhaps even only a unique individual [den Enkelte], could have brought about a particularly innovative and difficult artistic achievement is a distinct source of artistic enjoyment. Lange wants to argue that this type of artistic enjoyment depends upon the appreciator’s awareness of aspects of the art object’s origins. One can only admire a work, in the special sense of artistic admiration or ‘beundring’ conceived of by Lange, to the extent that one can understand and evaluate the artistic difficulties the artist has overcome. Although Lange here repeats a claim made in earlier aesthetic treatises (e.g. Véron 1878, 63), he takes the argument one step further. He turns to an imaginary indiscernibility example in an effort to make a point about the relevant aspects “in a work” [i et Værk] that can give rise to the special kind of enjoyment he has in mind: