Source: The Best of All Possible Worlds (2006), Chapter 3, The Least Action Principle, p. 48.
“A theory is the more impressive, the greater the simplicity of its premises, the more diverse things it connects, and the wider its scope”
1940s, "Autobiographical Notes" (1949)
Original: (de) Eine Theorie ist desto eindrucksvoller, je größer die Einfachheit ihrer Prämissen ist, je verschiedenartigere Dinge sie verknüpft, und je weiter ihr Anwendungsbereich ist.
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Albert Einstein 702
German-born physicist and founder of the theory of relativi… 1879–1955Related quotes
Source: 1940s - 1950s, Costs, Utilities, and Values, Sections I and II. (1956), p. 248 as cited in: Douglas, H.E. (2009) Science, Policy, and the Value-Free Ideal
Ian Shapiro and Casiano Hacker-Cordon, "Outer edges and inner edges" in Democracy's Edges (1999) edited by Ian Shapiro and Casiano Hacker-Cordon.

“A book can never be anything more than the impression of its author’s thoughts.”
The value of these thoughts lies either in the matter about which he has thought, or in the form in which he develops his matter — that is to say, what he has thought about it.
Essays, On Authorship and Style

L'anisotropie de l'espace. La nécessaire révision de certains postulats des théories contemporaines. Les données de l'expérience (1997), p. 591

Source: The Hidden Side of things (1913), Chapter I
Source: An Introduction To Probability Theory And Its Applications (Third Edition), Chapter V, Conditional Probability, Stochastic Independence, p. 114.

Source: Evolution: the general theory (1996), p. 125.