Equivalence Class Structure

Famous quotes containing the words class and/or structure:

“The class of citizens who provide at once their own food and their own raiment, may be viewed as the most truly independent and happy.”
—James Madison (1751–1836)

“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)