- The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifiability.
Language, Truth, and Logic (1936) ch. 1 1910–89 English philosopher:
- I don't think that makes any difference. A door-opener for the Communist party is worse than a member of the Communist party. When someone walks like a duck, swims like a duck, and quacks like a duck, he's a duck.
of Communist affiliations during the McCarthy era
New York Times 3 September 1948; see Harris 1911–73 American labour leader: in
- In fact the a priori reasoning is so entirely satisfactory to me that if the facts won't fit in, why so much the worse for the facts is my feeling.
after reading The Origin of Species
The Life of Charles Darwin (1902) 1804–81 English physician: letter to Charles Darwin, 23 November 1859; F. Darwin (ed.)
- Now, what I want is, Facts…Facts alone are wanted in life.
Hard Times (1854) bk. 1, ch. 1 1812–70 English novelist:
- What can be asserted without evidence can also be dismissed without evidence.
Slate Magazine 20 October 2003 1949–2011 English-born American journalist and writer: in
- Facts do not cease to exist because they are ignored.
Proper Studies (1927) 1894–1963 English novelist:
- Roundabout the accredited and orderly facts of every science there ever floats a sort of dust cloud of exceptional observations, of occurrences minute and irregular and seldom met with, which it always proves more easy to ignore than to attend to.
The Will to Believe (1897) 1842–1910 American philosopher:
- When the facts change, I change my mind.
Lost Prophets (1994) 1883–1946 English economist: in the 1930s, attributed; Alfred L. Malabre
- Science is built up of facts, as a house is built of stones; but an accumulation of facts is no more a science than a heap of stones is a house.
Science and Hypothesis (1905) ch. 9 1854–1912 French mathematician and philosopher of science:
- Extraordinary claims require extraordinary evidence.
Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium (1997) 1934–96 American scientist and writer:
- Some circumstantial evidence is very strong, as when you find a trout in the milk.
Journal 11 November 1850 1817–62 American writer:
- Get your facts first, and then you can distort 'em as much as you please.
From Sea to Sea (1899) letter 37 1835–1910 American writer: Rudyard Kipling