- The duties of the second class, although requiring considerable skill in arithmetical operations, were yet in some measure relieved by the higher interest naturally felt in those more difficult operations. - "On the Economy of Machinery and Manufactures", Charles Babbage.
- " I don't seem to care much about your arithmetical prowess," father said, smiling. - "The Heart of Una Sackville", Mrs. George de Horne Vaizey.
- Thinkers who start out with the individuals separately conceived, and then seek to combine them in some arithmetical way, abstract from those organic social relations which constitute the very heart of the phenomenon we are seeking to explain. - "The Value of Money", Benjamin M. Anderson, Jr..