In the case of a painting, for example, “a visible, individual form [is] produced by the interaction of colors, lines, surfaces, lights and shadows” (1957b, 128), or whatever else enters into the specific work. In a dance or a musical composition, the form is transient and dynamic, but no less complex. And in literary works, the form is given to imagination, as a “passage of purely imaginary, apparent events” (1962, 86).