What is colouring material?

Famous quotes containing the words colouring and/or material:

    Every philosophy is tinged with the colouring of some secret imaginative background, which never emerges explicitly into its train of reasoning.
    Alfred North Whitehead (1861–1947)

    Ours is a culture based on excess, on overproduction; the result is a steady loss of sharpness in our sensory experience. All the conditions of modern life—its material plenitude, its sheer crowdedness—conjoin to dull our sensory faculties.
    Susan Sontag (b. 1933)