Thoughts on the Riemann hypothesis http://link.springer.com/article/10.1007/BF02985392 The Mathematical Intelligencer (December 2004) vol. 26, issue 1, pp. 4–7, quote on p. 4
“The mathematical forms of order which the mind of a physicist manipulates coincides "miraculously" with experimental measurements.”
Source: Psyche and Matter (1992), p. 269
Help us to complete the source, original and additional information
Marie-Louise von Franz 30
Swiss psychologist and scholar 1915–1998Related quotes
Source: Die Mathematik die Fackelträgerin einer neuen Zeit (Stuttgart, 1889), p. 12.

"Interview with George Gamow" http://www.aip.org/history/ohilist/4325.html, by Charles Weiner at Professor Gamow's home in Boulder, Colorado (25 April 1968)

p, 125
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)

“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.

“It is we who are the measure of what is strange and miraculous”
A 26
Aphorisms (1765-1799), Notebook A (1765-1770)
Context: It is we who are the measure of what is strange and miraculous: if we sought a universal measure the strange and miraculous would not occur and all things would be equal.

“Those who really solve mathematical puzzles are the physicists.”
In Interview with Professor Carlo Beenakker. Interviewers: Ramy El-Dardiry and Roderick Knuiman (February 1, 2006).
Context: … mathematicians are much more concerned for example with the structure behind something or with the whole edifice. Mathematicians are not really puzzlers. Those who really solve mathematical puzzles are the physicists. If you like to solve mathematical puzzles, you should not study mathematics but physics!
[Physics Today, A Lowbrow's View of Feynman, 42, 2, 1989, 10.1063/1.881197] (p. 85)