Elementary, my dear Sir Arthur

“In the present utilitarian age one frequently hears the question asked, ‘What is the use of it all?’ as if every noble deed was not its own justification.  As if every action which makes for self-denial, for hardihood, and for endurance was not in itself a most precious lesson to mankind.  That people can be found to ask such a question shows how far materialism has gone, and how needful it is that we insist upon the value of all that is nobler and higher in life.” — Sir Arthur Conan Doyle (quoted by David Eugene Smith in The Teaching of Geometry)