Equivalence Class Structure

Famous quotes containing the words class and/or structure:

    “Ours is the old, old story of every uprising race or class or order. The work of elevation must be wrought by ourselves or not at all.”
    —Frances Power Cobbe (1822–1904)

    “Each structure and institution here was so primitive that you could at once refer it to its source; but our buildings commonly suggest neither their origin nor their purpose.”
    —Henry David Thoreau (1817–1862)