He [James Abbott McNeill Whistler] was then asked for his definition of a Nocturne: “I have perhaps, meant rather to indicate an artistic interest alone in the work, divesting the picture from any outside sort of interest which might have been otherwise attached to it. It is an arrangement of line, form, and colour first, and I make use of any incident of it which shall bring about a symmetrical result. Among my works are some night pieces; and I have chosen the word Nocturne because it generalises and simplifies the whole set of them.”