Equivalence Class Structure

Famous quotes containing the words class and/or structure:

“History is full, down to this day, of the imbecility of kings and governors. They are a class of persons much to be pitied, for they know not what they should do.”
—Ralph Waldo Emerson (1803–1882)

“Who says that fictions only and false hair
Become a verse? Is there in truth no beauty?
Is all good structure in a winding stair?
May no lines pass, except they do their duty
Not to a true, but painted chair?”
—George Herbert (1593–1633)