“From the errors of other nations, let us learn wisdom”

Nicht vor Irrthum zu bewahren, ist die Pflicht des Menschen erziehers; sondern den Irrenden zu leiten, ja ihn seinen Irrthum aus vollen Bechern ausschlürfen zu lassen, das ist Weisheit der Lehrer. Wer seinen Irrthum nur kostet, hält lange damit Haus; er freuet sich dessen als eines seltenen Glücks; aber wer ihn ganz erschöpft, der muß ihn kennenlernen.
Bk. VII, Ch. 9
Wilhelm Meister's Lehrjahre (Apprenticeship) (1786–1830)

in The Erasmus Reader (1990), p. 130.
Ciceronianus (1528)

Academy of Achievement interview (1991)
Context: The idea of being constructive, creative, positive, in trying to bring out the best in one's own self and the best in others follows from what I've just been saying. Again, I repeat my belief in us, in ourselves, as the product of the process of evolution, and part of the process itself. I think of evolution as an error-making and error-correcting process, and we are constantly learning from experience. It's the need to dedicate one's self in that way, to one's own self, and to choose an activity or life that is of value not only to yourself but to others as well.

Source: Think Big: Unleashing Your Potential for Excellence

Induction and Analogy in Mathematics (1954)

Source: Website of Mehr News Agency, 2017 http://www.mehrnews.com/news/3954046/%D9%BE%D8%B0%DB%8C%D8%B1%D8%B4-%D8%AE%D8%B7%D8%A7-%D8%AF%D8%B1-%D8%AA%D8%B1%D8%A8%DB%8C%D8%AA-%D8%A7%D9%86%D8%B3%D8%A7%D9%86-%D8%B6%D8%B1%D9%88%D8%B1%DB%8C-%D8%A7%D8%B3%D8%AA

1790s, Farewell Address (1796)