**Peter Joseph William Debye** (March 24, 1884 – November 2, 1966) was a Dutch physicist and physical chemist, and Nobel laureate.

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**Mathematical physics is in the first place physics and it could not exist without experimental investigations.**- Inaugural lecture for his professorship of mathematical physics at the University of Utrecht (1913), as quoted by Davies, Mansel.
*Peter Joseph Wilhelm Debye: 1884-1966. Biographical Memoirs of Fellows of The Royal Society*, Vol. 16 (1970).

- Inaugural lecture for his professorship of mathematical physics at the University of Utrecht (1913), as quoted by Davies, Mansel.