For most of my life I refused to work at any problem unless its solution seemed to be capable of being put to commercial use.
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Citation
Edison, Thomas Alva. Interview. New York Sun, Feb. 1917.
Edison, Thomas Alva. Interview. New York Sun, Feb. 1917.
Below are one or more quotes that share at least one tag with the quote at the top of the page
Twain, Mark. Mark Twain's Autobiography. Vol. 1, Harper & Brothers, 1924.
Twain, Mark. "New York, January 10, 1906." Autobiography of Mark Twain, edited by Harriet E. Smith, Benjamin Griffin, Victor Fischer, Michael Barry Frank, Sharon K. Goetz, Leslie Diane Myrick, and Robert Hirst. Vol. 1, University of California Press, 2010.
Human Action: A Treatise on Economics
Von Mises, Ludwig. Human Action: A Treatise on Economics. Yale University Press, 1949, ch. 27.
Freud, Sigmund. "Eine Kindheitserinnerung aus 'Dichtung und Wahrheit [A Childhood Recollection from 'Dichtung und Warheit [Poetry and Truth].'" Zeitschrift für Anwendung der Psychoanalyse auf die Geisteswissenschaften [Journal of the Application of Psychoanalysis to the Humanities]. Vol. 5, 1917, pp. 49–57.
Freud, Sigmund. "A Childhood Recollection from 'Dichtung Und Wahrheit.'" The Complete Psychological Works of Sigmund Freud: An Infantile Neurosis and Other Works, translated by James Strachey. Vol. 17, Vintage, 2001.