Mark Kac Quote

To the author the main charm of probability theory lies in the enormous variability of its applications. Few mathematical disciplines have contributed to as wide a spectrum of subjects, a spectrum ranging from number theory to physics, and even fewer have penetrated so decisively the whole of our scientific thinking.

Lectures in Applied Mathematics (Volume 1), Probability and Related Topics in Physical Sciences, Preface (p. ix), Interscience Publishers, Ltd. 1959