“A single test which proves some piece of theory wrong is more valuable than a hundred tests showing that idea might be true.”
Source: The Light of Other Days (2000), Chapter 6
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Arthur C. Clarke 207
British science fiction writer, science writer, inventor, u… 1917–2008Related quotes

“It is a test of true theories not only to account for but to predict phenomena.”
Aphorism 39.
Philosophy of the Inductive Sciences (1840)
Source: Mind and Nature, a necessary unity, 1988, p. 29

Source: Refactoring: Improving the Design of Existing Code, 1999, p. 98.

Source: Refactoring: Improving the Design of Existing Code, 1999, p. 98.

“Testing shows the presence, not the absence of bugs”
Dijkstra (1969) J.N. Buxton and B. Randell, eds, Software Engineering Techniques, April 1970, p. 16. Report on a conference sponsored by the NATO Science Committee, Rome, Italy, 27–31 October 1969. http://homepages.cs.ncl.ac.uk/brian.randell/NATO/nato1969.PDF Possibly the earliest documented use of the famous quote.
1960s