Richard Courant Quotes
Richard Courant, Herbert Robbins, Ian Stewart (1996). “What is Mathematics?: An Elementary Approach to Ideas and Methods”, p.23, Oxford University Press, USA
Richard Courant, Herbert Robbins (1979). “What is mathematics?: an elementary approach to ideas and methods”, Oxford University Press, USA
"What is Mathematics?" by Richard Courant, (p. xix), 1941.
Richard Courant (1948). “Lectures on the theory of functions”
"Mathematics in the Modern World". Scientific American, Vol 211, (p. 42), September 1964.
Richard Courant, Herbert Robbins (1979). “What is mathematics?: an elementary approach to ideas and methods”, Oxford University Press, USA