“Nothing is too small. I counsel you, put down in record even your doubts and surmises. Hereafter it may be of interest to you to see how true you guess. We learn from failure, not from success!”
Professor Abraham Van Helsing to Dr. John Seward
Source: Dracula (1897)
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Bram Stoker 84
Irish novelist and short story writer, best known today for… 1847–1912Related quotes
“Nothing fails like success because we don't learn from it. We learn only from failure.”
Kenneth Boulding (1971) "The diminishing returns of science" in: New Scientist. (March 25, 1971) Vol. 49, nr. 744. p. 682
1970s
Context: Perhaps the most difficult ethical problem of the scientific community arises not so much from conflict with other subcultures as from its own success. Nothing fails like success because we don't learn from it. We learn only from failure.

“You learn as much from failure as from success, Dad always says. Though no one admires you for it.”
Source: We Are All Completely Beside Ourselves
Source: 1970s, Ecodynamics: A New Theory Of Societal Evolution, 1978, p. 42

Don Soderquist “ The Wal-Mart Way: The Inside Story of the Success of the World's Largest Company https://books.google.com/books?id=mIxwVLXdyjQC&lpg=PR9&dq=Don%20Soderquist&pg=PR9#v=onepage&q=Don%20Soderquist&f=false, Thomas Nelson, April 2005, p. 115.
On working hard

"No Surrender"
Song lyrics, Born in the U.S.A. (1984)