“Any progress in the theory of partial differential equations must also bring about a progress in Mechanics.”

Source: General System Theory (1968), 4. Advances in General Systems Theory, p. 96, as cited in: Vincent Vesterby (2013) From Bertalanffy to Discipline-Independent-Transdisciplinarity http://journals.isss.org/index.php/proceedings56th/article/viewFile/1886/672

Source: Time is the Simplest Thing (1961), Chapter 10 (p. 75)

Source: "Outlines of the Science of Energetics," (1855), p. 213

"On one class of functional equations" (1936), as cited in: O'Connor, John J.; Robertson, Edmund F., " Leonid Kantorovich http://www-history.mcs.st-andrews.ac.uk/Biographies/Kantorovich.html", MacTutor History of Mathematics archive, University of St Andrews

Free speech in an age of identity politics (2015)

Bernal (1967) The Origin of Life, p. xv. Preface

Under Fire (1916), Ch. 24 - The Dawn
Context: I tell them that fraternity is a dream, an obscure and uncertain sentiment; that while it is unnatural for a man to hate one whom he does not know, it is equally unnatural to love him. You can build nothing on fraternity. Nor on liberty, either; it is too relative a thing in a society where all the elements subdivide each other by force.
But equality is always the same. Liberty and fraternity are words while equality is a fact. Equality should be the great human formula — social equality, for while individuals have varying values, each must have an equal share in the social life; and that is only just, because the life of one human being is equal to the life of another. That formula is of prodigious importance. The principle of the equal rights of every living being and the sacred will of the majority is infallible and must be invincible; all progress will be brought about by it, all, with a force truly divine. It will bring first the smooth bed-rock of all progress — the settling of quarrels by that justice which is exactly the same thing as the general advantage.

Source: Dune

Founding Address (1876)
Context: The freedom of thought is a sacred right of every individual man, and diversity will continue to increase with the progress, refinement, and differentiation of the human intellect. But if difference be inevitable, nay, welcome in thought, there is a sphere in which unanimity and fellowship are above all things needful. Believe or disbelieve as ye list — we shall at all times respect every honest conviction. But be one with us where there is nothing to divide — in action. Diversity in the creed, unanimity in the deed! This is that practical religion from which none dissents. This is that platform broad enough and solid enough to receive the worshipper and the "infidel." This is that common ground where we may all grasp hands as brothers, united in mankind's common cause.