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
Troly-Curtin, Marthe. Phrynette Married. The Macmillan Company of Canada, 1912.
The American Instructor: or Young Man's Best Companion
Franklin, Benjamin. "Advice to a Young Tradesman." The American Instructor: or Young Man's Best Companion. Philadelphia: George Fisher, 1748.
Franklin, Benjamin. "Advice to a Young Tradesman." Benjamin Franklin: Silence Dogood, The Busy-Body and Early Writings, edited by J. A. Leo Lemay. Library of America, 2005.
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.