“The history of mathematics throws little light on the psychology of mathematical invention.”
100 Years of Mathematics: a Personal Viewpoint (1981)
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George Frederick James Temple 21
British mathematician 1901–1992Related quotes

“The moving power of mathematical invention is not reasoning, but imagination.”
Quoted in Robert Perceval Graves, The Life of Sir William Rowan Hamilton, Vol. 3 (1889), p. 219.
Source: Mathematics and the Physical World (1959), p. 59

“Only mathematics and mathematical logic can say as little as the physicist means to say.”
The Scientific Outlook (1931)
1930s
Context: Ordinary language is totally unsuited for expressing what physics really asserts, since the words of everyday life are not sufficiently abstract. Only mathematics and mathematical logic can say as little as the physicist means to say.

“Mathematics as an Element in the History of Thought.”
1920s, Science and the Modern World (1925)
Attributed to George A. Kelly in Hinkle (1970, p. 91), as cited in: Fay Fransella and Robert A. Neimeyer. "George Alexander Kelly: The man and his theory." International handbook of personal construct psychology (2003): 21-31.

Source: 1930s, Principles of topological psychology, 1936, p. vii.
“Mathematics is universal. But very little else is.”
Source: The Heritage Universe, Summertide (1990), Chapter 10, “Summertide Minus Eighteen” (p. 119)

Source: Achimedes (1920), Ch. I. Archimedes, p.1