“101 Dealing with failure is easy: Work hard to improve. Success is also easy to handle: You've solved the wrong problem. Work hard to improve.”
Epigrams on Programming, 1982
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Alan Perlis 30
American computer scientist 1922–1990Related quotes
“Hard work makes easy reading or, at least, easier reading.”
Cornell Chronicle interview (1999)

As quoted in The Leadership Secrets of Colin Powell (2003) by Oren Harari, p. 164.
2000s
“I was born. It was easy. My mother did all the hard work.”
Source: Blow Me Down

“How easy it is to make people believe a lie, and [how] hard it is to undo that work again!”
Misquote: It's easier to fool people than to convince them that they have been fooled.
Source: Autobiography of Mark Twain, Vol. 2 (2013), p. 302

Quoted in profile by Israel Shenker, "E. B. White: Notes and Comment by Author" http://www.nytimes.com/books/97/08/03/lifetimes/white-notes.html, The New York Times (11 July 1969)