Essential Minkowski Sum

Famous quotes containing the words essential and/or sum:

    Fewer and fewer Americans possess objects that have a patina, old furniture, grandparents’ pots and pans—the used things, warm with generations of human touch, ... essential to a human landscape. Instead, we have our paper phantoms, transistorized landscapes. A featherweight portable museum.
    Susan Sontag (b. 1933)

    To sum up our most serious objections in a few words, we should say that Carlyle indicates a depth—and we mean not impliedly, but distinctly—which he neglects to fathom.
    Henry David Thoreau (1817–1862)