Thomas Hobbes quote: “The first and fundamental law of Nature, which is, to seek peace and follow it.”

“The supreme Being is everywhere; but He is not equally visible everywhere. Let us seek Him in the simplest things, in the most fundamental laws of Nature, in the universal rules by which movement is conserved, distributed or destroyed; and let us not seek Him in phenomena that are merely complex consequences of these laws.”

Pierre Louis Maupertuis (1698–1759) French mathematician, philosopher and man of letters

Les Loix du Mouvement et du Repos, déduites d'un Principe Métaphysique (1746)

“As is known, scientific physics dates its existence from the discovery of the differential calculus. Only when it was learned how to follow continuously the course of natural events, attempts, to construct by means of abstract conceptions the connection between phenomena, met with success. To do this two things are necessary: First, simple fundamental concepts with which to construct; second, some method by which to deduce, from the simple fundamental laws of the construction which relate to instants of time and points in space, laws for finite intervals and distances, which alone are accessible to observation”

Bernhard Riemann (1826–1866) German mathematician

can be compared with experience
Die partiellen Differentialgleichungen der mathematischen Physik (1882) as quoted by Robert Édouard Moritz, Memorabilia Mathematica; Or, The Philomath's Quotation-book https://books.google.com/books?id=G0wtAAAAYAAJ (1914) p. 239

“I believe our students must first seek to understand the conditions, as far as possible without national prejudices, which have led to past tragedies and should strive to determine the great fundamentals which must govern a peaceful progression toward a constantly higher level of civilization.”

George Marshall (1880–1959) US military leader, Army Chief of Staff

Essentials to Peace (1953)
Context: I believe our students must first seek to understand the conditions, as far as possible without national prejudices, which have led to past tragedies and should strive to determine the great fundamentals which must govern a peaceful progression toward a constantly higher level of civilization. There are innumerable instructive lessons out of the past, but all too frequently their presentation is highly colored or distorted in the effort to present a favorable national point of view. In our school histories at home, certainly in years past, those written in the North present a strikingly different picture of our Civil War from those written in the South. In some portions it is hard to realize they are dealing with the same war. Such reactions are all too common in matters of peace and security. But we are told that we live in a highly scientific age. Now the progress of science depends on facts and not fancies or prejudice. Maybe in this age we can find a way of facing the facts and discounting the distorted records of the past.

“It may be seen, in my work, that the course which I have adopted is that followed by the natural philosopher, in order to grasp the laws that regulate the material world. By the seizure of facts, I seek to rise to an appreciation of the causes whence they spring.”

Adolphe Quetelet (1796–1874) Belgian astronomer, mathematician, statistician and sociologist

Preface of M. Quetelet
A Treatise on Man and the Development of His Faculties (1842)

“Further, as every law of nature implies the existence of an invariant, it follows that every law of nature is a constraint.”

W. Ross Ashby (1903–1972) British psychiatrist

Source: An Introduction to Cybernetics (1956), Part 2: Variety, p. 130

“It seems to be one of the fundamental features of nature that fundamental physical laws are described in terms of a mathematical theory of great beauty and power”

Paul Dirac (1902–1984) theoretical physicist

The Evolution of the Physicist's Picture of Nature (1963)
Context: It seems to be one of the fundamental features of nature that fundamental physical laws are described in terms of a mathematical theory of great beauty and power, needing quite a high standard of mathematics for one to understand it. You may wonder: Why is nature constructed along these lines? One can only answer that our present knowledge seems to show that nature is so constructed. We simply have to accept it. One could perhaps describe the situation by saying that God is a mathematician of a very high order, and He used very advanced mathematics in constructing the universe. Our feeble attempts at mathematics enable us to understand a bit of the universe, and as we proceed to develop higher and higher mathematics we can hope to understand the universe better.