Activists From The United States

"There must be opportunities for judgment to mature. When, therefore, you increase your business to a very great extent, and the multitude of problems increase with its growth, you will find, in the first place, that the man at the head has a diminishing knowledge of the facts and, in the second place, a diminishing opportunity of exercising a careful judgment upon them."

"For a while he trampled with impunity on laws human and divine; but, as he was obsessed with the delusion that two and two make five, he fell, at last, a victim of the relentless rules of humble arithmetic. "Remember, O Stranger, Arithmetic is the first of the sciences and the mother of safety"."

"[N]o people ever did or ever can attain a worthy civilization by the satisfaction merely of material needs . . ."

"It is, as a rule, far more important how men pursue their occupation than what the occupation is which they select."

"What I have desired to do is to make the people of Boston realize that the most important office, and the one which all of us can and should fill, is that of private citizen. The duties of the office of private citizen cannot under a republican form of government be neglected without serious injury to the public."

"When a man feels that he cannot leave his work, it is a sure sign of an impending collapse."

"The bow must be strung and unstrung . . . there must be time also for the unconscious thinking which comes to the busy man in his play."

"The intensity and complexity of life, attendant upon advancing civilization, have rendered necessary some retreat from the world."

"We are a non-utopian political movement. We are not interested in going nowhere. We are not interested in going to some place we have never been, which we will get to after the revolution because people will be different. The crucial operating premise of the Free Software Movement as a revolutionary politic is: Proof of Concept plus Running code. Here. We did it already. It's sort of working. If you take a copy and help us fix it, it could really be something. Here. You want it? Take it. We like it. It's Free."

"The Entertainment Industry on Planet Earth had decided that in order to acquire Layer 7 Data Security, it was necessary to lock up layers 2, 3, 4, 5, and 6 so that no technological progress could occur without their permission. This was known by the IT Industry and the Consumer Electronics Industry on the planet to be offensive nonsense, but there was no counterweight to it, and there was no organised consumer dissent sufficient to require them to stand up for technical merit and their own right to run their own businesses without dictation from companies a tenth their size. Not surprisingly, since it is part of the role we play in this political power concentrated in poverty, humility, and sanctity, we brought them to a consensus they were unable to bring themselves to - which is represented in the license by a rule which fundamentally says "If you want to experiment with locking down layer below 7 in the pursuit of data networks inside businesses that keep the business's data at home, you may do so freely, we have no objection - not only do we have no objection to you doing it, we've no objection to your using our parts to do it with. But when you use our parts to build machines which control peoples' daily lives - which provide them with education and culture, build devices which are modifiable by them to the same extent that they're modifiable by you. That's all we want. If you can modify the device after you give it to them, then they must be able to modify the device after you give it to them - that's a price for using our parts. That's a deal which has been accepted."

"I think Larry is right to notice that the contradictions are catching the allies up already. It's one of those cases where even before you begin bombing the children, the coalition is falling apart. And that's good news. And I'm very much in favor of it. Some Powell or other is messing up the war."

"The great moral question of the twenty-first century is this: if all knowledge, all culture, all art, all useful information can be costlessly given to everyone at the same price that it is given to anyone; if everyone can have everything, anywhere, all the time, why is it ever moral to exclude anyone?"

"The difference is, this time, we win."

"You could make a good case that the history of social life is about the history of the technology of memory. That social order and control, structure of governance, social cohesion in states or organizations larger than face-to- face society depends on the nature of the technology of memory--both how it works and what it remembers... In short, what societies value is what they memorize, and how they memorize it, and who has access to its memorized form determines the structure of power that the society represents and acts from."

"An unlocked door means that, occasionally, you might get a devil come in, but a locked door means you have thousands of angels just walk by."

"I think that the idea of straight edge, the song that I wrote, and the way people have related it it, there's some people who have abused it, they've allowed their fundamentalism to interfere with the real message, which in my mind, was that people should be allowed to live their lives the way they want to."

"When people who are songwriters say 'That's my property and if you give it away for free then I'll lose my incentive,' then, well, good riddance."

"I saw in the Soviet Union many opponents of the regime. I visited a dozen prisons — the political sections among them. I saw considerable of the work of the OGPU. I heard a good many stories of severity, even of brutality, and many of them from the victims. While I sympathized with personal distress I just could not bring myself to get excited over the suppression of opposition when I stacked it up against what I saw of fresh, vigorous expressions of free living by workers and peasants all over the land. And further, no champion of a socialist society could fail to see that some suppression was necessary to achieve it. It could not all be done by persuasion."

"I believe in non-violent methods of struggle as most effective in the long run for building up successful working class power. Where they cannot be followed or where they are not even permitted by the ruling class, obviously only violent tactics remain. I champion civil liberty as the best of the non-violent means of building the power on which workers rule must be based. If I aid the reactionaries to get free speech now and then, if I go outside the class struggle to fight against censorship, it is only because those liberties help to create a more hospitable atmosphere for working class liberties. The class struggle is the central conflict of the world; all others are incidental."

"The Nazi-Soviet pact of 1939, a traumatic shock to me, ended any ambivalence I had about the Soviet Union, and all cooperation with Communists in united fronts."

"So long as we have enough people in this country willing to fight for their rights, we'll be called a democracy."

"[I]f American champions of civil liberty could all think in terms of economic freedom as the goal of their labors, they too would accept "workers' democracy" as far superior to what the capitalist world offers to any but a small minority. Yes, and they would accept — regretfully, of course — the necessity of dictatorship while the job of reorganizing society on a socialist basis is being done."

"When that power of the working class is once achieved, as it has been only in the Soviet Union, I am for maintaining it by any means whatever. Dictatorship is the obvious means in a world of enemies at home and abroad. I dislike it in principle as dangerous to its own objects. But the Soviet Union has already created liberties far greater than exist elsewhere in the world. They are liberties that most closely affect the lives of the people — power in the trade unions, in peasant organizations, in the cultural life of nationalities, freedom of women in public and private life, and a tremendous development of education for adults and children."

"In the case where the universe does not recollapse, the proper distance to the is...d_{MAX}(t) = a(t) \int_{0}^{r_{MAX}(t)} \frac{dr}{\sqrt{1-Kr^2}} = a(t)\int_{0}^{\infty} \frac{dt'}{a(t')}... In the absence of a cosmological constant, a(t) grows like t^{\frac{2}{3}}, and the integral diverges, so there is no event horizon. But with a cosmological constant, a(t) will eventually grow as exp(Ht) with H = H_0 \Omega^{1/2}_\Lambda constant and... an event horizon... approaches... d_{MAX}(\infty) = 1/H. As time passes all sources of light outside our gravitationally bound will move beyond this... and become unobservable. The same is true for the quintessence theory... In that case a(t) eventually grows as exp(const \times\, t^{2/{(2+\frac{\alpha}{2})}}), so for any \alpha \ge 0 the integral... [d_{MAX}(t)] converges."

"[T]he distance at present isd_{\mathrm{max}}(t_0) = \frac{1}{H_0} \int_{0}^{1} \frac{dx}{x^2 \sqrt{\Omega_\Lambda+\Omega_K x^{-2}+\Omega_M x^{-3}}}...[T]here may have been a time before the radiation-dominated era in which there was nothing in the universe but , in which case the particle horizon distance would... be infinite. But as far as telescopic observations... [d_{max}(t_0)] gives the proper distance beyond which we cannot now see."

"Modern cosmological theories can exhibit horizons of two... types. which limit the distances at which past events can be observed or at which it will ever be possible to observe future events. These are called Rindler s and s, respectively."

"In 1929 Hubble announced... a "roughly linear" relation between and distance. ...His data points ...did not really support a linear relation. But in the early 1930s he had measured redshifts and distances out to the , with a redshift z \eqsim 0.02, corresponding to... 7,000 km/sec and a linear relation... was evident. The conclusion... the universe is really expanding. ...At the time of writing, the largest... z=6.96. It may eventually become possible to measure the expansion rate H(t) \equiv \dot{a}(t)/a(t) at times t earlier than the present, by observing the change in very accurately measured redshifts of individual galaxies over times as short as a decade."

"[T]he property of being a geodesic is invariant under coordinate transformations... so the path of the photon or particle will... be a geodesic in any spatial coordinate system..."

"Consider... [the formula given by special relativity for the magnitude of the ]P \equiv m_0 \sqrt{g_{ij}\frac{dx^i}{d\tau}\frac{dx^j}{d\tau}}...where d\tau^2 = dt^2 - g_{ij} dx^i dx^j. [This holds because in] a locally inertial Cartesian coordinate system, for which g_{ij} = \delta_{ij}, we have d\tau = dt\sqrt{1 - \mathbf {v}^2} where v^i = \frac{dx^i}{dt}... [The P] is evidently invariant under arbitrary changes in the spatial coordinates, so we can evaluate it... in Robertson-Walker coordinates. ...[T]o save work ...adopt a spatial coordinate system in which the particle position is near the origin x^i = 0, where \tilde{g}_{ij} = \delta_{ij} + \mathit0(\mathbf{x}), and we can therefore ignore the purely spatial components of \Gamma_{jk}^i of the . General relativity gives [the momentum]... with a metric g_{ij} = a^2(t)\delta_{ij}...P(t) \propto 1/a(t)... for any non-zero mass, however small... Hence, although for photons both m_0 and d\tau vanish... [the momentum relation] is still valid."

"[T]o extend this to the geometry of spacetime... include a term... in the spacetime line element, with a now an arbitrary function of time (known as the Robertson-Walker scale factor):d\tau^2 \equiv -g_{\mu\nu}(x) dx^\mu dx^\nu = dt^2-a^2(t)[d\mathbf{x}^2 + K \frac{(\mathbf{x} \cdot d\mathbf{x}^2)}{1-K\mathbf{x}^2}]"

"[In] the case of Euclidean space...ds^2 = a^2[d\mathbf{x}^2 + K \frac{(\mathbf{x} \cdot d\mathbf{x}^2)}{1-K\mathbf{x}^2}]...where K ="

"Consider the geometry of a three-dimensional homogeneous and isotropic space. ...[G]eometry is encoded in a metric g_{ij}(\mathbf{x}) (with i and j running over the three coordinate directions), or equivalently a line element ds^2 \equiv g_{ij} dx^i dx^j, with summation over repeated indices... ds is the proper distance between \mathbf{x} and \mathbf{x}+\mathbf{dx}, meaning... the distance measured by a surveyor who uses a... Cartesian [coordinate system] in a small neighborhood of... point \mathbf{x}.) One... homogeneous isotropic three-dimensional space with positive definite lengths is flat space, with line elementds^2=d\mathbf{x}^2...The coordinate transformations that leave this invariant are... ordinary three-dimensional rotations and translations. ...Another ...possibility is a four-dimensional with some radius a, with line elementds^2=d \mathbf{x}^2+dz^2,\;\;z^2 + \mathbf{x}^2 = a^2,...Here the transformations that leave the line element invariant are four-dimensional rotations; the direction of \mathbf{x} can be changed to any other direction by a four-dimensional rotation that does not change z. ...[T]he only other possibility (up to a coordinate transformation) is a hyperspherical surface in four-dimensional , with line elementds^2 = d\mathbf{x}^2 - dz^2,\;\;z^2 - \mathbf{x}^2 = a^2,...where a^2 is (so far) an arbitrary positive constant. The coordinate transformations that leave this invariant are four-dimensional pseudo-rotations, just like s, but with z instead of time."

"Almost all of modern cosmology is based on this Robert-Walker metric, at least as a first approximation."

"The visible universe seems the same in all directions... larger than about 300 million light years. The ... (...[~]one part in 105) in the cosmic microwave background... radiation... traveling... [~]14 billion years, supporting the conclusion..."

"I hope the readers will let me know of any mistakes... I will post them on... zippy.ph.utexas.edu/~weinberg/corrections.html."

"Where I knew them I have included references to... the Cornell archive, ...arxiv.org, as well as to the published literature. ...I have quoted the latest measurements of cosmological s known to me, in part... to give the reader a sense of what is... observationally possible. ...I have not tried to combine measurements from observations of different types because... it would [not] add... additional physical insight and any... cosmological concordance would... soon be out of date."

"I decided to exclude material that was highly speculative... cosmological theory in higher dimensions... anthropic reasoning... holographic cosmology... conjectures about the details of inflation, or many other new ideas. ...The present book is largely concerned with ...mainstream cosmology: ...inflation driven by one or more scalar fields ...followed by a big bang dominated by radiation, , baryonic matter, and ."

"So much has happened in cosmology since the 1960s that this book... bears little resemblance to... Gravitation and Cosmology. On occasion I refer back to (..."G&C") for material that does not seem worth repeating... Classical general relativity has not changed much since 1972 (apart from a great strengthening of its experimental verification) so it did not seem necessary to cover gravitation... I provide a brief introduction in Appendix B. Other appendices deal with technical material... I have also supplied a glossary of symbols..."

"I have tried... to present analytic calculations of cosmological phenomena, and not just report results obtained elsewhere by numerical computation. The calculations... in the literature... necessarily take many details into account, which either make an analytic treatment impossible, or obscure the main physical features of the calculation. Where this is the case, I have not hesitated to sacrifice some degree of accuracy for greater transparency."

"In 1999 I finished my three volume book on the quantum theory of fields (..."QTF"), and... set... the task of learning... the theory underlying the great progress in cosmology in the previous two decades. ...Review articles ...gave good summaries of the data, but ...often quoted formulas without ...derivation, and sometimes ...without reference to the original derivation. Occasionally the formulas were wrong, and extremely difficult for me to rederive. ...[O]riginal ...articles sometimes had gaps in their arguments, or relied on hidden assumptions, or used unexplained notation. Often massive computer programs had taken the place of analytic studies. In many cases... it was easiest to work out the relevant theory myself. This book is the result. Its aim... self-contained explanations of the ideas and formulas... used and tested in modern cosmological observations."

"I'm offended by the kind of smarmy religiosity that's all around us, perhaps more in America than in Europe, and not really that harmful because it's not really that intense or even that serious, but just... you know after a while you get tired of hearing clergymen giving the invocation at various public celebrations and you feel, haven't we outgrown all this? Do we have to listen to this?"

"There is one constant that seems to be fine tuned...and that is dark energy."

"I have a friend — or had a friend, now dead — Abdus Salam, a very devout Muslim, who was trying to bring science into the universities in the Gulf states and he told me that he had a terrible time because, although they were very receptive to technology, they felt that science would be a corrosive to religious belief, and they were worried about it... and damn it, I think they were right. It is corrosive of religious belief, and it's a good thing too."

"Maybe at the very bottom of it... I really don't like God. You know, it's silly to say I don't like God because I don't believe in God, but in the same sense that I don't like Iago, or the Reverend Slope or any of the other villains of literature, the god of traditional Judaism and Christianity and Islam seems to me a terrible character. He's a god who will... who obsessed the degree to which people worship him and anxious to punish with the most awful torments those who don't worship him in the right way. Now I realise that many people don't believe in that any more who call themselves Muslims or Jews or Christians, but that is the traditional God and he's a terrible character. I don't like him."

"Many people do simply awful things out of sincere religious belief, not using religion as a cover the way that Saddam Hussein may have done, but really because they believe that this is what God wants them to do, going all the way back to Abraham being willing to sacrifice Isaac because God told him to do that. Putting God ahead of humanity is a terrible thing."

"Finally, learn something about the history of science, or at a minimum the history of your own branch of science. The least important reason for this is that the history may actually be of some use to you in your own scientific work."

"As you will never be sure which are the right problems to work on, most of the time that you spend in the laboratory or at your desk will be wasted. If you want to be creative, then you will have to get used to spending most of your time not being creative, to being becalmed on the ocean of scientific knowledge."

"Another lesson to be learned, to continue using my oceanographic metaphor, is that while you are swimming and not sinking you should aim for rough water."

"I managed to get a quick PhD — though when I got it I knew almost nothing about physics. But I did learn one big thing: that no one knows everything, and you don't have to."

"The best military historians in fact do recognize the difficulty in stating rules of generalship. They do not speak of a science of war, but rather of a pattern of military behavior that cannot be taught or stated precisely but that somehow or other sometimes helps in winning battles. This is called the art of war. In the same spirit I think that one should not hope for a science of science, the formulation of any definite rules about how scientists do or ought to behave, but only aim at a description of the sort of behavior that historically has led to scientific progress—an art of science."