What is colouring material?

Famous quotes containing the words material and/or colouring:

    Surely, we are provided with senses as well fitted to penetrate the spaces of the real, the substantial, the eternal, as these outward are to penetrate the material universe. Veias, Menu, Zoroaster, Socrates, Christ, Shakespeare, Swedenborg,—these are some of our astronomers.
    Henry David Thoreau (1817–1862)

    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)