“We usually find a considerable degree of correlation between indicators and also between different sets of weights that we should ever think of using. Consequently we are likely to find that alternative index numbers using different weights show similar and often approximately proportionate movements. That this is so in most economic applications is due to the nature of the actual world and not simply to the formal characteristics of index number techniques.”

Cause, Principle, and Unity (1584)
Context: We find that everything that makes up difference and number is pure accident, pure show, pure constitution. Every production, of whatever kind, is an alteration, but the substance remains always the same, because it is only one, one divine immortal being.

Alleged to have been made in a September 13, 2001 press conference. This wording has not been confirmed.
Attributed, Misquotations

Source: Fundamentals of measurement and representation of natural systems. (1978), Ch. 2. The Basic Formalism; Quoted in: Mikulecky, Donald C. " Robert Rosen: the well‐posed question and its answer‐why are organisms different from machines? http://www.people.vcu.edu/~mikuleck/PPRISS3.html." Systems Research and Behavioral Science 17.5 (2000): 419-432.

Source: Researches into the Mathematical Principles of the Theory of Wealth, 1897, p. 3 ; Cited in: Robert Edouard Moritz. Memorabilia mathematica; or, The philomath's quotation-book https://archive.org/stream/memorabiliamathe00moriiala#page/198/mode/2up, (1914) p. 33: About the nature of mathematics

Alan Moore on Anarchism (2009)
Context: I suppose I first got involved in radical politics as a matter of course, during the late 1960s when it was a part of the culture. The counterculture, as we called it then, was very eclectic and all-embracing. It included fashions of dress, styles of music, philosophical positions, and, inevitably, political positions. And although there would be various political leanings coming to the fore from time to time, I suppose that the overall consensus political standpoint was probably an anarchist one. Although probably back in those days, when I was a very young teenager, I didn’t necessarily put it into those terms. I was probably not familiar enough with the concepts of anarchy to actually label myself as such. It was later, as I went into my twenties and started to think about things more seriously that I came to a conclusion that basically the only political standpoint that I could possibly adhere to would be an anarchist one.
It furthermore occurred to me that, basically, anarchy is in fact the only political position that is actually possible. I believe that all other political states are in fact variations or outgrowths of a basic state of anarchy; after all, when you mention the idea of anarchy to most people they will tell you what a bad idea it is because the biggest gang would just take over. Which is pretty much how I see contemporary society. We live in a badly developed anarchist situation in which the biggest gang has taken over and have declared that it is not an anarchist situation – that it is a capitalist or a communist situation. But I tend to think that anarchy is the most natural form of politics for a human being to actually practice. All it means, the word, is no leaders. An-archon. No leaders.
And I think that if we actually look at nature without prejudice, we find that this is the state of affairs that usually pertains.

p, 125
Stetigkeit und irrationale Zahlen (1872)

from a 1987 class, as quoted in David L. Goodstein, "Richard P. Feynman, Teacher," Physics Today, volume 42, number 2 (February 1989) p. 70-75, at p. 73
Republished in the "Special Preface" to Six Easy Pieces (1995), p. xx.

guilt, not simply before some external tribunal, be it even God's, but guilt before the more inexorable bar of our own soul.”
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Harmony of Determinism and Freedom, p.370-1

28 September 2014, Sunday Times http://www.pressreader.com/bookmark/NWNJXD8V5BO2/
Speaking & Features