“The strength of a theory is not what it allows, but what it prohibits; if you can invent an equally persuasive explanation for any outcome, you have zero knowledge.”

Youtube, Other, Reason Rally Ra Rant https://www.youtube.com/watch?v=isrST6wOUJA (March 28, 2012)

"Afterthoughts," p. 217-218
What Do You Care What Other People Think? (1988)
Context: The only way to have real success in science, the field I’m familiar with, is to describe the evidence very carefully without regard to the way you feel it should be. If you have a theory, you must try to explain what’s good and what’s bad about it equally. In science, you learn a kind of standard integrity and honesty.

"Edward Witten" interview, Superstrings: A Theory of Everything? (1992) ed. P.C.W. Davies, Julian Brown
Context: It's been said that string theory is part of the physics of the twenty-first century that fell by chance into the twentieth century. That's a remark that was made by a leading physicist about fifteen years ago.... String theory was invented essentially by accident in a long series of events, starting with the Veneziano model... No one invented it on purpose, it was invented in a lucky accident.... By rights, string theory shouldn't have been invented until our knowledge of some of the areas that are prerequisite... had developed to the point that it was possible for us to have the right concept of what it is all about.

Objecting to the placing of observables at the heart of the new quantum mechanics, during Heisenberg's 1926 lecture at Berlin; related by Heisenberg, quoted in Unification of Fundamental Forces (1990) by Abdus Salam ISBN 0521371406
1920s

The Ethic of Freethought (Mar 6, 1883)

Re: is CLOS reall OO? http://groups.google.com/group/comp.lang.lisp/msg/917737b7cc8510e3?dmode=source&amp;output=gplain (Usenet article). <br class="br">Usenet articles, Miscellaneous

The Hypocrite Detected, Anatomized

Regarding to restrictions of free press, of Tunisia, (2001). http://www.unhcr.org/refworld/country,,CPJ,,TUN,,47c56649c,0.html.