In his essay on textiles, Morris wrote: "The aim should be to combine clearness of form and firmness of structure with the mystery which comes of abundance and richness of detail...Do not introduce any lines or objects which cannot be explained by the structure of the pattern; it is just this logical sequence of form, this growth which looks as if, under the circumstances, it could not have been otherwise, which prevents he eye wearying of he repetition of the pattern.