“It is well known that a vital ingredient of success is not knowing that what you're attempting can't be done. A person ignorant of the possibility of failure can be a half-brick in the path of the bicycle of history.”
Source: Equal Rites
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Terry Pratchett 796
English author 1948–2015Related quotes

“You can measure your worth by your dedication to your path, not by your successes or failures.”
Source: Big Magic: Creative Living Beyond Fear
“Modest successes are better known as failures.”
Halliwell's Who's Who in the Movies (2001 ed.): Art. "Frederic Raphael", p. 363
Page 85
The Third Policeman (1967)

The Art of Fiction http://public.wsu.edu/~campbelld/amlit/artfiction.html (1884)

Source: 1970s-1980s, The Limits Of Organization (1974), Chapter 1, Rationality: Individual And Social, p. 25

Source: The Passionate Mistakes and Intricate Corruption of One Girl in America