The highest form of pure thought is in mathematics. (Plato)

How can it be that mathematics, being after all a product of human thought which is independent of experience, is so admirably appropriate to the objects of reality. (Albert Einstein)

The eternal mystery of the world is its comprehensibility. (Albert Einstein)

The miracle of the appropriateness of the language of mathematics for the formulation of the laws of physics is a wonderful gift which we neither understand nor deserve. (E.P. Wigner)

One cannot understand... the universality of laws of nature, the relationship of things, without an understanding of mathematics. There is no other way to do it. (Richard P. Feynman)