Macarthur Fellows

"Ultimately, we hope to find a fundamental theory that explains everything with no input parameters."

"Gravity is not an option in string theory. It is a logical consequence of it!"

"Most string theorists are very arrogant ... If there is something [beyond string theory], we will call it string theory."

"Most of the Soldiers he got weren't that way. A lot of them were great, some were brilliant, and almost all were unquestionably courageous: Sergeant Gietz, who was being nominated for a bronze star medal with Valor for what he had done in June. Adam Schumann, who had carried Sergeant Emory on his back. The list went on and on. Every company. Every platoon. Every soldier, really, because now, in July, as the explosions kept coming, and coming, the daily act of them jumping into Humvees to go out the wire and straight into what they knew was waiting for them began to seem the very definition of bravery."

"The resulting explosion sent several large steel disks toward the Humvee at such high velocity that by the time they reached Cajimat's door, they had been reshaped into unstoppable, semi-molten slugs. At most, the IED cost $100 to make, and against it the $150,000 Humvee might as well have been constructed of lace."

"For now, Kauzlarich though that giving soccer balls to Iraqi children who would run up to his Humvee screaming, "Mister, mister," was having a positive effect. A child would take home a soccer ball; his parents would ask where it came from; he would say, "The Americans"; the parents would be delighted; their confidence would increase; they would be more willing to make the difficult decisions of reconciliation; Baghdad would become secure; democracy in Iraq would thrive; the war would be won. Eventually, Kauzlarich would give up on soccer balls."

"Four of the Soldiers scrambled out a door and got out of the trench relatively dry, but the gunner was trapped inside. "He was yelling," Staff Sergeant Arthur Enriquez would remember afterward, and if there was any hesitation about what to do next, it was only because, "I didn't want to jump in the poo water." And then? "I jumped into the damn poo water""

""The only hope you have is to get her to an American hospital?" Cummings asked, repeating what Izzy had just said. Izzy started to answer. The cell phone went dead. "Izzy?" Cummings said. "Izzy?" How did moments of decency occur in this war? "Izzy," Cummings said. "Bring your daughter here." That was how."

"What do the rules say? At the moment, anyway, no one seemed concerned one way or another: not the doctors, not the family, and not Cummings, who stood at the same spot he'd stood at as he watched Crow die, watching once again. […] The glass had been part of an apartment that no longer existed, in a section of Baghdad where the sounds that night were the sounds of mourning. But here on the FOB, the sounds were of a mother whose home was ruined kissing her daughter's face, and a father whose home was ruined kissing his daughter's hand, and a little girl whose home was ruined saying something in Arabic that caused her family to smile, and Cummings saying quietly in English, "Man, I haven't felt this good since I got to this hellhole.""

"It sounds weird, and I don't like telling people this, but the reason I joined the army is because I've always looked up to Soldiers."

"The guts of honey bee workers contain a distinctive community of bacterial species. They are microaerophilic or anaerobic, and were not clearly deliniated by earlier studies relying on laboratory culture of isolates under atmospheric oxygen levels. Recently, a more complete picture of the potential metabolism and functions of these bacteria have been possible, using genomic approaches based on metagenomic samples, as well as cultured isolates. Of these, most are host-restricted and are generally absent outside adult guts."

"The genomes of long-term obligate symbionts often undergo irreversible gene loss and deterioration even as hosts evolve dependence on them. In some cases, animal genomes may have acquired genes from symbionts, mirroring the gene uptake from mitochondrial and plastid genomes. Multiple symbionts often coexist in the same host, resulting in coadaptation among several phylogenetically distant genomes."

"Symbioses are central in the evolution of complexity; have evolved many times and are critical to the lifestyles of many animals and plants and also to whole ecosystems, in which symbiotic organisms are key players. The primary reason that symbiosis research is suddenly active, after decades at the margins of mainstream biology, is that DNA technology and genomics give us enormous new ability to discover symbiont diversity, and more significantly, to reveal how microbial metabolic capabilities contribute to the functioning of hosts and biological communities."

"Buchnera only have 600 genes, compared to about 4,000 or 5,000 for E. coli ... This is a recurring pattern in the genomes of both bacterial symbionts and pathogens, but why do they get so small? ... while part of the reduction is due to adaptation, a lot of it just reflects genetic drift ... It's just a consequence of long-term evolution in a restricted environment with small population sizes."

"Heteroecy appears to be a consequence of the seasonal polymorphism of aphids, which causes some morphs (the fundatrices) to be more evolutionarily constrained than others (the summer females) in their abilities to acquire hosts. Some aphid lineages have escaped this constraint by replacing the ancestral fundatrix morph and remaining all year on former secondary hosts, thus becoming secondarily autoecious. Most of the large and species-rich groups of Aphidinae on herbaceous angiosperms probably are derived from ancestors showing such life-cycle reduction."

"Biogeographical and paleobotanical evidence suggests that the aphid subtribe Melaphidina has been associated with its sumac host plant since the early Eocene when these plants were continuously distributed across the Bering land bridge. Transfer experiments indicate that the American species, Melaphis rhois, shows an unusual complex life cycle, similar to that known in Chinese melaphidines, with some generations feeding on mosses as alternate host plants. As with the association with sumac, this complex life cycle may have been established in the melaphidine lineage before the southward retreat of sumac from Alaska 48 million years ago. This example suggests that the interactions and life histories shown by modern populations may be determined, in large part, by evolutionary commitments made in the distant past."

"The aphid Pemphigus betae typically shows a complex life cycle, with annual alternation between cottonwood trees, where it forms leaf galls, and herbaceous plants, where it lives on roots. Distinct phenotypes are associated with each phase. In a population in Utah, aphid clones vary in their tendencies to undergo the cottonwood phase of the life cycle, with certain clones rarely producing the winged migrants that initiate the cottonwood phase."

"Life cycles that incorporate discrete, morphologically distnct phases predominate among animals."

"Among the many early revelations from molecular phylogenetic studies of bacteria (Woese, 1987) was the recognition that the mycoplasmas represented an evolutionarily derived condition rather than a primitive one, as once believed. Now that phylogenetic relationships and genome sizes are determined for a broader array of organisms, it is clear that the mycoplasmas are just one example of genome shrinkage that has occurred in a variety of obligately host-associated bacteria. Other prominent examples are Rickettsia and related pathogens within the α-proteobacteria; insect symbionts within the γ-proteobacteria, as exemplified by Buchnera aphidicola in aphids; the chlamydiae; and the parasitic spirochetes, such as Borrelia burgdorferi (the agent of Lyme disease)."

"What does leadership malpractice add to the elements visible in betrayal of what's right by the self in a high-stakes situation? Primarily, it destroys the capacity for social trust in the mental and social worlds of the service member or veteran. I regard this as a kind of wound contamination in the mind, preventing healing and leaking toxins. When the capacity for trust is destroyed, its place is filled by the active expectancy of harm, exploitation, or humiliation."

"Moral injury is present when"

"One of the facts of nature is that there is what's called parity violation, which means that the fundamental laws are not invariant under mirror reflection. For example, a neutrino always spins clockwise and not counterclockwise, so it would look wrong viewed in a mirror. When you try to write down a fundamental theory with parity violation, mathematical inconsistencies often arise when you take account of quantum effects. This is referred to as the anomaly problem. It appeared that one couldn't make a theory based on strings without encountering these anomalies, which, if that were the case, would mean strings couldn't give a realistic theory. Green and I discovered that these anomalies cancel one another in very special situations. When we released our results in 1984, the field exploded. That's when Edward Witten [a theoretical physicist at the Institute for Advanced Study in Princeton], probably the most influential theoretical physicist in the world, got interested. Witten and three collaborators wrote a paper early in 1985 making a particular proposal for what to do with the six extra dimensions, the ones other than the four for space and time. That proposal looked, at the time, as if it could give a theory that is quite realistic. These developments, together with the discovery of another version of superstring theory, constituted the first superstring revolution."

"While spectacularly successful at predicting the behavior of atoms and subatomic particles, the quantum laws looked askance at Einstein's formulation of gravity. This set the stage for more than a half-century of despair as physicists valiantly struggled, but repeatedly failed, to meld general relativity and quantum mechanics, the laws of the large and small, into a single all-encompassing description. Such was the case until December 1984, when John Schwarz, of the California Institute of Technology, and Michael Green, then at Queen Mary College, published a once-in-a-generation paper showing that string theory could overcome the mathematical antagonism between general relativity and quantum mechanics, clearing a path that seemed destined to reach the unified theory."

"As I once told a newspaper reporter, in order to be sure to be quoted: discovery of supersymmetry would be more profound than life on Mars."

"String theory is an ambitious approach to the construction of a mathematical description of the physics that governs the properties of elementary particls and their interactions as well as the structure of space and time. It incorporates (and maybe even explains) well-established principles such as quantum mechanics and relativity. In fact, many string theorists (myself included) believe that string theory constitutes the third big physics revolution of the century, following relativity and quantum mechanics. It certainly requires conceptual advances every bit as bizarre and unexpected as was the case in the prior two revolutions."

"The second superstring revolution (1994-??) has brought non-perturbative string physics within reach. The key discoveries were the recognition of amazing and surprising "dualities." They have taught us that what we viewed previously as five theories is in fact five different perturbative expansions of a single underlying theory about five different points! It is now clear that there is a unique theory, though it may allow many different vacua. ... Three different kinds of dualities, called S, T, and U have been identified.""

"In the early 1960s there existed a successful quantum theory of the electromagnetic force (QED), which was completed in the late 1940s, but the theories of the weak and strong nuclear forces were not yet known. In UC Berkeley, where I was a graduate student during the period 1962 – 66, the emphasis was on developing a theory of the strong nuclear force. I felt that UC Berkeley was the center of the Universe for high energy theory at the time. Geoffrey Chew (my thesis advisor) and Stanley Mandelstam were highly influential leaders. Also, Steve Weinberg and Shelly Glashow were impressive younger faculty members. David Gross was a contemporaneous Chew student with whom I shared an office."

"Supergravity theories generically contain non-compact global symmetry groups. The general rule is that the scalar fields of the theory in question parametrize a symmetric space. Thus, if the non-compact symmetry group is G, and its maximal compact subgroup is H, the scalar fields map the space-time into the symmetric space G/H, and the number of scalar fields is dim G – dim H. The first supergravity example of this type to be found, N = 4 supergravity is one of the most interesting. In this case there are two scalar fields and the symmetric space is SL(2,R)/SO(2)."

"Among the problems of the known string theories, as a theory of hadrons, was the fact that the spectrum of open strings contains massless spin 1 particles, and the spectrum of closed strings contains a massless spin 2 particle (as well as other massless particles), but there are no massless hadrons. In 1974, Joël Scherk and I decided to take string theory seriously as it stood, rather than forcing it to conform to our preconceptions. ... Specifically, Scherk and Schwarz (1974) proposed trying to interpret string theory as a unified quantum theory of all forces including gravity. Neveu and Scherk (1972) had shown that string theory incorporates the correct gauge invariances to ensure agreement at low energies (compared to the scale given by the string tension) with Yang-Mills theory. Yoneya (1973,1974) and Scherk and Schwarz (1974) showed that it also contains gauge invariances that ensure agreement at low energies with general relativity."

"I have a line in the last book about how to draw an invisible man, and it says, “I’m trying to be transparent.” I don’t actually want to be invisible, which is the dilemma of people of color, but I would like to be transparent, so people can see what my issues are, good and bad. I just try to be transparent and very present, and then see what happens."

"…All my flaws and quirks and neuroses, they fit just as well as the scarring that comes from racism or masculinity, and I don’t want to have to cut that off. People confuse privacy and secrecy way too much. I’m not saying it’s confessional, but it gives more texture to your work if you can figure out how not to close off those rooms."

"…here’s the thing about all the titles. It’s so great to not have to think about that. The title is a gesture to categorize it, reduce it, and frame it. In the sonnets I can carry an idea and know that I have to turn that idea…"

"…I think that poets can do anything. With a novel, we all know about plot and character and yes, there’s experimental and people can recognize that, but I think that there are rules. I don’t think of poetry that way…"

"I too, having lost faith in language, have placed my faith in language."

"To Donham, the case study stood squarely in the legal and cultural tradition of Anglo-American thought. Unlike French or Spanish law. Donham emphasized, English law was grounded on the doctrine of stare decisis, in which the written case decisions of the past shape, and instantiate, the law. Just as the recording of cases allowed English common law to break the arbitrariness of local law. Donham argued in 1925, business needed to universalize its procedures by itself adopting the case system. The chaos of local law that ruled in England before the common law. Donham contended, "is exactly the same situation that we have [in the world of business] where practically every large corporation is tightly hound by traditions which are precedents in its particular narrow field and narrow held only The recording of decisions from industry to industry [enables] us to start from facts and draw inferences from those facts; [it] will introduce principle... in the field of business to such an extent that it will control executive action in the field where executive action is haphazard or unprincipled or bound by narrow, instead of broad precedent and decision" ( W. Donham, transcript of talk to the Association of Coll. School of Business Committee Reports and Other Literature, 5-7 May 1925. Harvard Business School, box 17, folder 10. 62)."

"The search for original cases and the "superior" rules that would emerge from them spread far outside legal practice. Wallace Donham, dean of the Harvard Business School from 1919 to 1942, was trained at the law school in the heady days of the case system's early and enthusiastic reception. Where law and business parted ways was in the contingent matter of the availability of ready- made cases — law faculty simply reached for their shelves, while professors of business needed to create a new literary species — the business case book."

"There is very little dispute about the principal constituent elements of music, though experts will differ on the precise definitions of each aspect. Most central are 'pitch' (or melody) and 'rhythm'... next in importance only to pitch and rhythm is 'timbre', the characteristic qualities of tone."

"An a priori decision to eliminate spiritual intelligence from consideration is no more justifiable than a decision to admit it by fiat or on faith. After all, once one includes the understanding of the personal realm within a study of intelligence, such human proclivities as the spiritual must legitimately be considered. There certainly are no easy grounds for a decision, but several other intelligences deal with phenomena other than sheer physical matter. If the abstract realm of mathematics constitutes a reasonable area of intelligence (and few would challenge that judgment), why not the abstract realm of the spiritual?"

"Gardner (1999) notes three distinct senses of spiritual intelligence: (1) Spiritual as concerns with cosmic or existential issues; (2) Spiritual as achievement of a state of being; (3) Spiritual as effect on others. Gardner goes on to make an argument that spiritual intelligence would be best served by being called existential intelligence."

"If you are not prepared to resign or be fired for what you believe in, then you are not a worker, let alone a professional. You are a slave."

"Both science and history are moving targets. Scholars in the twenty-first century are much more aware than those of earlier generations that scientists operate under the influence of powerful metaphors (science as exploration, discovery, documentation, thrust and counterthrust), and that both the scope and the tools of history undergo continual changes. Still, most scientists and most historians would concur that the broad strokes I've sketched, when viewed from sufficient distance, are accurately rendered—that is, that science and history are each in pursuit of statements that represent the truths ascertained by their respective disciplines"

"The biggest mistake of past centuries in teaching has been to treat all children as if they were variants of the same individual, and thus to feel justified in teaching them the same subjects in the same ways."

"Stories are the single most powerful weapon in a leader's arsenal."

"Anything that is worth teaching can be presented in many different ways. These multiple ways can make use of our multiple intelligences."

"I want my children to understand the world, but not just because the world is fascinating and the human mind is curious. I want them to understand it so that they will be positioned to make it a better place."

"I am accustomed, as a professional mathematician, to living in a sort of vacuum, surrounded by people who declare with an odd sort of pride that they are mathematically illiterate."

"In the winter of 2008, Jenifer and I visited Chennai Mathematical Institute. This remarkable Institute is the creation of Seshadri. It is a unique blend of an American style liberal arts college with traditional Indian guru one-on-one teaching, adding physics, computer science, history and music to its maths curriculum. Only in India could an intellectual with no business or management experience, who spends all his spare time singing classical south Indian music, have been the catalyst for such a unique educational experiment."

"On a more personal note, I see many similarities between India's Dalit problems and the African-American problems that have rocked the US since its beginnings. For this reason, I personally take Dr. Ambedkar as one of my heroes."

"There is only one other survey, Datta and Singh’s 1938 History of Hindu Mathematics, recently reprinted but very hard to obtain in the West (I found a copy in a small specialized bookstore in Chennai). They describe in some detail the Indian work in arithmetic and algebra and, supplemented by the equally hard to find Geometry in Ancient and Medieval India by Sarasvati Amma (1979), one can get an overview of most topics."

"John Tate and I were asked by Nature magazine to write an obituary for Alexander Grothendieck. Now he is a hero of mine, the person that I met most deserving of the adjective "genius". I got to know him when he visited Harvard and John, Shurik (as he was known) and I ran a seminar on "s". His devotion to math, his disdain for formality and convention, his openness and what John and others call his naiveté struck a chord with me."