“I regard it as the foremost task of education to insure the survival of these qualities: an enterprising curiosity, an undefeatable spirit, tenacity in pursuit, readiness for sensible self denial, and above all, compassion.”

"Lonely Impulse of Delight: One Reader's Childhood," http://www.danagioia.net/essays/elonely.htm The Southern Review (Winter 2005)
Essays

Letter to Wilhelm Fliess, Feb. 1, 1900. The Complete Letters of Sigmund Freud to Wilhelm Fliess 1887-1904 (1985).
Ich bin nämlich gar kein Mann der Wissenschaft, kein Beobachter, kein Experimentator, kein Denker. Ich bin nichts als ein Conquistadorentemperament, ein Abenteurer, wenn Du es übersetzt willst, mit der Neugierde, der Kühnheit und der Zähigkeit eines solchen.
1900s

Overqualified

"The Function of Criticism at the Present Time", in The China Critic, Vol. III, no. 4 (23 January 1930), p. 81

Source: Leaves of Grass

As soon as I have the power to do so, I will have gallows built in rows—at the Marienplatz in Munich, for example—as many as traffic allows. Then the Jews will be hanged indiscriminately, and they will remain hanging until they stink; they will hang there as long as the principles of hygiene permit. As soon as they have been untied, the next batch will be strung up, and so on down the line, until the last Jew in Munich has been exterminated. Other cities will follow suit, precisely in this fashion, until all Germany has been completely cleansed of Jews.
Statement to Josef Heil, 1922 quoted in Gerald Fleming, Hitler and the Final Solution pg. 17 https://books.google.com/books?id=qPV_rGdhYpkC&pg=PA17&dq=Once+I+really+am+in+power,+my+first+and+foremost+task+will+be+the+annihilation+of+the+Jews.+As+soon+as+I+have+the+power+to+do+so,&hl=en&sa=X&ved=0ahUKEwi8uJGhnJbXAhUJbiYKHZXiDi4Q6AEIJzAA#v=onepage&q=Once%20I%20really%20am%20in%20power%2C%20my%20first%20and%20foremost%20task%20will%20be%20the%20annihilation%20of%20the%20Jews.%20As%20soon%20as%20I%20have%20the%20power%20to%20do%20so%2C&f=false
1920s