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April 10, 2026
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"Two of the major questions left unanswered by the Standard Model of particle physics have to do with hierarchies of mass scales. The first is the problem: what determines the masses of the s and s, and why do they span such a large range, e.g. why is the top quark 3 × 105 times heavier than the electron? The second is the gauge hierarchy problem: why is the weak scale seventeen orders of magnitude smaller than the ?"
"If there is no connection between quarks and leptons, since quarks make up the proton, then the balance of the proton and electron charge is just a remarkable coincidence. It seems impossible for any thinking person to be satisfied with coincidence as an explanation. Some principle must relate the charges of the quarks and the leptons. What is it? A fancier way of saying it, and more or less equivalent, is that for the electroweak theory to make sense up to arbitrarily high energies, the symmetries on which it is based must survive quantum corrections."
"Neither quarks nor leptons exhibit any structure on a scale of about 10-16 cm, the currently attained resolution. We thus have no experimental reason but tradition to suspect that they are not the ultimate elementary particles. Accordingly, we idealize the quarks and leptons as pointlike particles, remembering that elementarity is subject to experimental test."
"Each second, some 1014 neutrinos made in the Sun and about a thousand neutrinos made by cosmic rays in Earth's atmosphere pass through your body."
"The Higgs boson is an essential part of the analogy to the Meissner effect in superconductivity that leads us to an excellent understanding of the masses of the electroweak gauge bosons W± and Z0 as consequences of electroweak symmetry breaking."
"And then, on October 5, 1995, a paper appeared that changed the whole discussion, forever. It was Joe, explaining D-branes to those of us who’d barely heard of his earlier work, and showing that many of these black holes, black strings and black surfaces were actually D-branes in disguise. His paper made everything clearer, simpler, and easier to calculate; it was an immediate hit. By the beginning of 1996 it had 50 citations; twelve months later, the citation count was approaching 300."
"My greatest failure as head of the Theory Group here in Austin was to lose Joe to Santa Barbara."
"On notable classmate was Dan Friedan. Friedan stunned me, and I think everyone else, at his Ph.D. seminar, when he showed that Einstein's equation, the basic equation of general relativity, could be interpreted in terms of one of the basic objects in QFT, the β function that governs the energy scale. I did not see what this could possibly mean, but a few years later it showed up as one of the key ideas in string theory."
"In all there are four arguments here for the multiverse: the failure of conventional methods for understanding why the cosmological constant is not large, the success of the environmental theories for doing so, the successful prediction of the nonzero cosmological constant, and the string landscape."
"In the open string the gauge charges are carried by the Chan-Paton degrees of freedom at the endpoints. In the closed string the charges are carried by fields that move along the string."
"D-branes provide a simple description of various nonperturbative objects required by string duality, and give new insights into the quantum mechanics of black holes and the nature of spacetime at the shortest distances. ... D-branes are extended objects, topological defects in a sense, defined by the property that strings can end on them."
"From the late 1940s until the early 1960s, events seemed to prove the Keynesians correct. Then, beginning in the 1960s, several distinguished economists began to challenge Keynesian ideas. Their counterrevolutionary views, which in many ways mirrored those of the classical economists, were strengthened by events in the 1970s, when the economy’s behavior began to contradict some Keynesian ideas. But in 2008 and 2009, as the economy sank into the most serious worldwide recession since the Great Depression, Keynesian ideas were once again at the center of a heated debate about the causes of the problem and the appropriate remedies."
"Alongside their work on pure economic theory, the classical political economists engaged in a parallel project: to promote the forcible reconstruction of society into a purely market-oriented system."
"Perhaps because so much of what the classical economists wrote about traditional systems of agricultural production was divorced from the seemingly more timeless remarks about pure theory, later readers have passed over such portions of their works in haste. ... I argue that these interventionist recommendations were a significant element in the overall thrust of their works. Specifically, classical political economy advocated restricting the viability of traditional occupations in the countryside to coerce people to work for wages."
"Most people in Britain did not enthusiastically engage in wage labor—at least so long as they had an alternative. To make sure that people accepted wage labor, the classical political economists actively advocated measures to deprive people of their traditional means of support."
"Having Colbert suggest that I was a fiction was pretty much one of the highlights of my writing career."
"As a kid, I was unquestionably a nerd, but it wasn't really a culture you could opt into or out of. It was just sort of something you were or were not. As far as today, I'm certainly friendly to that world, with my affinities, but I would probably get kicked out of the national convention for being a bit of a poser. I'm not as well-versed in many of the worlds that I'd need to be a bona fide card-carrying geek these days."
"Of course there is a monkey. There is always a monkey."
"Paradigm shifts in human thought always depend on iconoclasts who are not afraid to challenge conventional wisdom. Although our thinking in the past generation about the moral status of animals has advanced in certain respects, its fundamental presuppositions have suffered from a debilitating stagnation. … The fact that we humans tend to be comfortable with a regime of animal exploitation dating back thousands of years is not a justification for our continued subjugation of animals. It is an obstacle that we urgently need to overcome. To this end, what we need more than anything else is thinkers with the courage and the determination to break the images in the temple."
"The definite mass ratios involved in reactions suggested a convenient method for counting the number of atoms of each element participating in the reaction. These results, summarized as the laws of chemical combination,provided overwhelming, if indirect, evidence for the existence of atoms and molecules."
"Investigating chemical reactions can be greatly complicated and often obscured by the presence of extraneous materials. So, the first step, therefore, is to learn how to analyze and classify materials to ensure that you are working with pure substances before initiating any reactions."
"Chemists think in the highly visual nanoscopic world of atoms and molecules, but they work in the tangible world of macroscopic laboratory apparatus. These two approaches to the chemical sciences cannot be divorced."
"The science of chemistry rests on two well-established principles: the conservation of matter and the conservation of energy."
"Chemical reasoning, as used both in applications and in basic research, resembles a detective story in which tangible clues lead to a mental picture of events never directly witnessed by the detective."
"Upon encountering a new topic, try this: imagine that you are the first person ever to see the laboratory results on which it is based. Imagine that you must construct the new concepts and explanations to interpret these results, and that you will present and defend your conclusions before the scientific community. Be suspicious. Cross-check everything. Demand independent confirmations. Always remain, with Boyle, the “skeptical chemist.”"
"Quantum mechanics explains the physical stability of the atom by predicting its allowed discrete energy levels and defining the wave functions (also called atomic orbitals) associated with each energy level. The orbitals determine the probability density for finding the electrons at particular locations in the atom when the electrons are in a specific quantum state."
"The central idea of quantum theory is that energy, like matter, is not continuous but it exists only in discrete packets. Discreteness of matter and charge on the microscopic scale seems entirely reasonable and familiar to us, based on the modern picture of atomic structure. But, the idea that energy also exists only in discrete chunks is contrary to our experience of the macroscopic world. The motions of a soccer ball rolling up and down the sides of a gully involve arbitrary amounts of kinetic and potential energy; nothing in ordinary human experience suggests that the energy of a system should change abruptly by “jumps.” Understanding quantum mechanics requires that we develop a new kind of physical intuition, based on the results of experiments that are impossible to understand using classical mechanics. These results are completely divorced from ordinary human experience in the macroscopic world around us, and our physical intuition from the macroscopic world cannot be transferred to the quantum domain. We must resist the urge to interpret these quantum results in terms of ordinary experience."
"The shapes of molecules influence their behavior and function, especially the ease with which they can fit into various guest-host configurations important in biology and biochemistry."
"We point out that not every reactant is completely consumed in a chemical reaction, and that the limiting reactant determines the maximum theoretical yield; the percentage yield may be somewhat less."
"The conservation of matter in a chemical change is represented in a balanced chemical equation for that process. The study of the relationships between the numbers of reactant and product molecules is called stoichiometry. Stoichiometry is fundamental to all aspects of chemistry."
"Laboratory or industrial chemical reactions are carried out with quantities that range from milligrams to tons, so we must be able to relate the relative atomic mass scale to the macroscopic scales used in practice. The link between the two scales is provided by Avogadro’s number (NA)."
"Knowledge of the components of the atom and of the forces that hold them together stimulated entirely new fields of basic science and technology that continue to the present."
"The huge human brain, approximately 1,350 cubic centimeters, is the most complex organic structure in the known world. Understanding the human mind/brain mechanisms in evolutionary perspective is the goal of the new scientific discipline called evolutionary psychology. Evolutionary psychology focuses on four key questions: (1) Why is the mind designed the way it is—that is, what causal processes created, fashioned, or shaped the human mind into its current form? (2) How is the human mind designed—what are its mechanisms or component parts, and how are they organized? (3) What are the functions of the component parts and their organized structure—that is, what is the mind designed to do? (4) How does input from the current environment interact with the design of the human mind to produce observable behavior?"
"I used to think that medicine and particularly surgery is just failed prevention. That if we could treat these people properly and, particularly, if we could do something about prevention, we could empty the hospital wards. It was probably false, but that's what I used to think."
"When people would come in with non-specific problems and we never quite got to the root of a medical diagnosis, it always seemed to me they were expressing problems in living, and that one needed to look at their problems in living, and how they manifested themselves in physical problems."
"I thought that health was a manifestation of the way we organize society, and that by asking about health in society, we're asking about society itself."
"The family image, the family tradition, was that my parents were poor immigrants into East London, and that they thought that education was vitally important. But they both left school at fourteen, and so I grew up with the idea that, but for the opportunity, my parents would have been educated. That they were giving me this opportunity, and by golly, I better take advantage of it."
"When it broke down, I would break down. I had to wean myself from it just to survive. I had to have interventions. People would say, ‘You’ve got to do something else.’ So that was part of it—being too dependent on this thing I couldn’t count on."
"Now my ears are awakening again, just because I’m part of the zeitgeist of contemporary whatever. Even though I’m in this remote place, I get it."
"And if it made it one trip, it wouldn’t make the other. Then somebody stole half of it. I found out about that 20 years later, when someone sent me a photograph and said, ‘Does this look familiar to you?’ I nearly fainted."
"It had to go all the way out to the west coast and come all the way back to the east coast every time it needed to be fixed."
"The frustration was with the philosophy of the instrument."
"Both Rand and Rothbard, overeager to seal the case for expelling the state from the economy that economic arguments alone apparently could not clinch, had to cast themselves as participants in a Manichean struggle against unscrupulous wrongdoers with impure motives. This already betokened a deep complacency about the validity of their own views, such that anyone who disagreed with them must be a deliberate enemy of truth; and it marked the beginning of the anti-intellectualism that continues to disfigure libertarian thought. The virtually unanimous opposition of scholars and intellectuals to a view as self-evidently true as libertarianism seems to be to Rand and Rothbard must, they thought, be a function of the intellectuals’ perversity (rather than of weaknesses of libertarian argument and evidence)."
"…A government as large as the modern megastate cannot conceivably be controlled by a well-informed public, since it is literally impossible to be knowledgeable about even a fraction of the many complex matters modern governments are called upon to govern. … The attraction of free markets … is that they have self-correcting features that place far smaller demands on anyone’s knowledge than democracy does. Each person concerns herself with her own life and the system, supposedly, runs itself. Interpreted in this way, the literature on public ignorance could form the basis of the consequentialist argument the postwar free-market economists sought, but never found … against all government economic intervention: for even if it cannot be shown, on economic grounds, that every intervention hurts more than it helps, it might be shown, on political grounds, that by opening the door to helpful interventions, we begin sliding toward the unhelpful ones on a slope slippery with public ignorance."
"Empirical research does not, as of yet, seem to have legitimately gotten anyone 100 percent of the way to libertarianism; there remain, at the very least, some public goods and, in principle, the need for economic redistribution. Libertarian philosophy fills the gap between what free-market economists can prove about the undesirable consequences of government intervention and the absolute prohibition of all intervention. Consequentialist and nonconsequentialist arguments for libertarianism may be antithetical in principle, but they are symbiotic in practice."
"Why, if (as Boaz maintains) the liberty of a human being to own another should be trumped by equal human rights, the liberty to own large amounts of property should not also be trumped by equal human rights?"
"The left has, in practice, been prevented from taking advantage of its own frequent disagreements with public opinion by its historically contingent attachment to democratic politics as the primary means to its ends. This allegiance has forced leftist political and cultural critics to presuppose the possibility of rational democratic politics—if only the corrupting influences of money, commercialization, and corporate control could be excised. Libertarians have the basis for a deeper critique of modern culture: they understand that what corporations sell, consumers want to buy. But, precluded by their own ideology—which effectively celebrates whatever consumers choose as, ipso facto, good—from criticizing consumerism, libertarians end up being as unthinkingly apologetic about mass culture in its commercial manifestations as the left is about mass culture in its political guise."
"Libertarian philosophy lowers the logical and evidentiary standards for libertarian social science: if one believes that redistribution and regulation are immoral anyway because they violate self-ownership rights, then it is understandable that one would have a cavalier attitude about proving that redistribution and regulation cause unhappiness or “disorder,” or that they always serve the venal interests of politicians and bureaucrats. The orthodox libertarian schema implies that these consequentialist arguments are superfluous."
"We now face the culmination of a long campaign in the courts and in the halls of various governmental bodies, and in the press, to remove the laws against homosexuality from the statute books, and to permit any such relationship between consenting adults. Part of this is a new, anti-Biblical interpretation of this perversion. The facts are read in evolutionary framework, and so we are told it is a form of immaturity. Again, others read it as environmentally determined, so that the pervert is simply reflecting his environmental conditioning. Again there are others who say it is simply a fight for masculinity in a difficult world. All these and the other variations on the modern interpretation, share in common an environmental and an evolutionary approach. There are those in fact who claim that it is a basic component of all people, so that all of us have some aspect of every perversion in us."
"While Rushdoony's followers do not like to acknowledge his Holocaust Denial, it is incontestable that he held such a position, according to the technical definition (i.e., a massive lowering of the number of estimated dead from the usual six million and rejection of the idea of systematic mass slaughter). His sources are atrocious, secondhand, and unverified; that he held this position speaks volumes about this appalling incompetence as a historian, and one can only speculate as to why he held the position from a moral perspective... He deals with the matter under the issue of the ninth commandment and, ironically breaches it himself in his presentation of the matter."