Equivalence Class Structure

Famous quotes containing the words class and/or structure:

    “Mankind divides itself into two classes,—benefactors and malefactors. The second class is vast, the first a handful.”
    —Ralph Waldo Emerson (1803–1882)

    “For the structure that we raise,
    Time is with materials filled;
    Our to-days and yesterdays
    Are the blocks with which we build.”
    —Henry Wadsworth Longfellow (1809–1882)