The aesthetic ideas underlying the absolute music derive from debates over the relative value of what were known in the early years of aesthetic theory as the fine arts. Kant, in his "Critique of Aesthetic Judgment", dismissed music as "more enjoyment than culture" because of its lack of conceptual content, thus treating as a deficit the very feature of music that others celebrated. Johann Gottfried Herder, in contrast, regarded music as the highest of the arts because of its spirituality, which Herder attributed to the invisibility of sound. The ensuing arguments among musicians, composers, music historians and critics have, in effect, never stopped.