Born, Max

All great discoveries in experimental physics have been due to the intuition of men who made free use of models, which were for them not products of the imagination, but representatives of real things.

Philosophical Quarterly Physical Reality (p. 140) Volume 3, Number 11, April 1953

Feynman, Richard

...the more you see how strangely Nature behaves, the harder it is to make a model that explains how even the simplest phenomena actually work. So theoretical physics has given up on that.

QED: The Strange Theory of Light and Matter Chapter 3 (p. 82)

Weisskopf, Victor F.

What is a model? A model is like an Austrian timetable. Austrian trains are always late. A Prussian visitor asks the Austrian conductor why they bother to print timetables. The conductor replies: "If we did not, how would we know how late the trains are?"

In H Frauenfelder and E.M. Henley Subatomic Physics Part V (p. 351)

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