Harvard University Alumni

"When it comes to learning, Triumph is the real foe; it’s Disaster that’s your teacher. It’s Disaster that brings objectivity. It’s Disaster that’s the antidote to that greatest of delusions, overconfidence. And ultimately, both Triumph and Disaster are impostors. They are results that are subject to chance. One of them just happens to be a better teaching tool than the other."

"Your likelihood of slipping in a shower is orders of magnitude larger than your likelihood of being in a terrorist attack— but just try convincing someone of that, especially if they knew someone who died in the Twin Towers."

"Ibn al-Shatir’s forgotten model was rediscovered in the late 1950’s by E. S. Kennedy. .. In a preliminary work, the Commentariolus, he [Copernicus] employed an arrangement equivalent to Ibn al-Shatir's. Later, in De revolutionibus, he reverted to the use of eccentric orbits, adopting a model that was the sun-centered equivalent of the one developed at Maragha. Could Copernicus have been influenced by the Maragha astronomers or by Ibn al-Shatir? ...some of the al-Tusi material is known to have reached Rome in the 15th century (many Greek manuscripts were carried west after the fall of Constantinople in 1453), but there is no evidence that Copernicus ever saw It... . I personally believe he could have invented the method independently."

"Some of the al-Tusi material is known to have reached Rome in the 15th century... but there is no evidence that Copernicus ever saw it.…I personally believe he could have invented the method independently."

"It took a particular genius and a great deal of luck to make war pay, and Richard had neither."

"Once again, the viewer is made to recognize the sheer glory of kingship, its otherworldly status, and Richard’s distance from his subjects. This majesty is revealed by the actual events of Richard’s life and death to have been empty at its heart."

"The idea of the court sustained Richard, and he sustained it, at vast expense. He surrounded himself with courtiers who stood to gain from his largesse, and who therefore flattered and praised him as he wished. He experienced his court – his day-to-day life of hunting, or feasting, or games – as the place where the king’s will was enacted without question, and he believed that this was as it should be. But beyond his court circle all was very different, in ways which Richard seems not to have understood."

"Richard understood his own reign through the distorting lens of the court he made for himself; he could not understand why the regality he regarded as his right was denied to him on the broader stage."

"Here and throughout the reign, the tendency was to focus criticism on particular individuals charged with corruption, rather than to address the structures which made such corruption endemic."

"Being thought to be untrustworthy is no better – indeed in political terms much worse – than actually being untrustworthy."

"The Londoners’ faithful love and their money were both important to Richard; unfortunately he sought the latter at the expense of the former, while imagining them to be the same thing."

"As we approach him through contemporary records and chronicles, any sense of the real man beneath the image recedes, never to be caught. Chroniclers tell us what they think he said or did, or that bias or rumour believed he had done or said – and even then they give us a Richard who baffled those around him. But the idea of Richard II is as real an object of historical study as the man himself. When it comes to trying to understand the fate of a king, the idea of him may be the only real object of study there is."

"The long story of the medieval cult of chivalry, from its emergence in the twelfth century to its belated glories in the court of the young Henry VIII, is punctuated by the ongoing conflict between knighthood’s idealistic claims to virtue and divine favour, and the Church’s condemnation of all chivalric values as empty and worthless."

"This kind of moral analysis is characteristic of medieval thought: the aim is to condemn where condemnation is due, but to salvage from the criticism the ideals which animate and support society."

"The government’s reassertion of control over England in the aftermath demonstrated a merciless insistence on the social structure, which tied all into the hierarchy, supporting the king at the top. It was part of Richard’s failure that he did not understand, or would not accept, his throne’s dependence on the stability of that structure."

"The court was by definition in place of extreme instability, of faction and favourites, in which men could rise and fall as they pleased or displeased of the king. For the nation to function at large, this could not be the case. The noble men of the realm needed the security of their patrimony, their status and their rights; for them to support the king they needed to know that he would support the social structure which maintained them all. Richard had demonstrated, fatally, that everything was personal to him."

"Richard’s difficulties were many, but the essence of his personal feelings seems to have lain in the confluence of these two great ideas – the divinity of kingship and the perfection of peace – because for Richard, ‘peace’ in the sense that he valued it meant the complete obedience of every subject to the will of the king."

"This is no Henry VIII to command obedience by sheer force of personality; rather, Richard’s image enacts kingship itself, around a curious void. As an individual, he is absent from the portrait; as king, he is presented for our veneration."

"Richard’s will was sovereign, and yet it could not be trusted not to change. He had demonstrated that he would erase history, change the statutes of the realm, rather than remit his desires."

"entails the regulation of , cell expansion, and , and patterning of the organ as a whole. s are ideally suited to dissecting these processes. Petals are dispensable for growth and reproduction, enabling varied manipulations to be carried out with ease. In ', petals have a simple laminar structure with a small number of cell types, facilitating the analysis of organogenesis. This review summarizes recent studies that have illuminated some of the complex interplay between the s controlling petal specification, growth and differentiation in Arabidopsis. These advances, coupled with the advantages of using petals as a model , provide an excellent platform to investigate the underlying mechanisms driving plant organogenesis."

"Mainstream geology is founded upon enunciated by James Hutton (1726–1797) and Charles Lyell (1797–1875), who argued that, during unlimited expanses of time, the Earth has undergone slow, ceaseless change by processes we can observe in operation. In their view, we cannot call on any powers that are not natural to the globe, admit of any action of which we do not know the principle, nor allege extraordinary events to explain a common appearance. A , originating from outside the Earth, and wreaking change instantaneously. Such a process violates every tenet of uniformitarianism. Largely for this reason, hypotheses of impact origin for craters on the Earth and the moon were vigorously opposed for the better part of the past century. Space-age research now has established beyond doubt the authenticity of impact as a geologic process, but an abundance of evidence exists that a wide chasm still persists between the views of impact specialists and those of terrestrial geologists. A full realization of the ramifications of impact processes may have been delayed by the advent of , which engulfed the geological community in the late 1960s. Revolutionary as it appeared at that time, plate tectonics, which is envisioned as involving gradual changes generated by forces internal to the globe, fully conforms with uniformitarian principles. In contrast, impact processes, which have recently been cited to account for cataclysmic events such as massive tsunami deposits, incinerating wildfires, and global extinctions, carry genuinely revolutionary implications that are fatal to the uniformitarian principle itself."

"In August, 1933, at the in Chicago, was founded with an enrollment of 57 charter members and and as the first President and Secretary-Treasurer, respectively. Within five years, the Society had doubled in size, with members from the U.S.A. and ten other nations. Annual meetings were suspended during World War II (1942 through 1945) and when it reconvened in 1946 the members adopted the name “”. By that time personal and professional antagonisms had arisen that threatened to fragment the Society and led, in 1949, to the resignation of Nininger and his wife. Throughout the 1950s the Society was widely regarded as a small, disorganized and essentially moribund organization. Revitalization of the Society began in the early 1960s after the advent of the when the Society steadily gained members with expertise in , , , and , and impact dynamics."

"Since the opening of the , images from have enabled us to map the surfaces of all the rocky planets and in the Solar System, thus transforming them from astronomical to geological objects. This progression of geology from being a strictly to one that is planetary-wide has provided us with a wealth of information on the evolutionary histories of other bodies and has supplied valuable new insights on the Earth itself. We have learned, for example, that the , and that the Moon subsequently accreted largely from debris of . The airless, waterless Moon still preserves a record of the impact events that have scarred its surface from the time its crust first formed. The much larger, volcanic Earth underwent a similar bombardment but most of the evidence was lost during the earliest 550 million years or so that elapsed before its first surviving systems of crustal rocks formed. Therefore, we decipher Earth's earliest history by investigating the record on the Moon. Lunar samples collected by the of the USA and the of the former USSR linked the Earth and Moon by their oxygen isotopic compositions and enabled us to construct a timescale of lunar events keyed to dated samples. They also permitted us to identify certain meteorites as fragments of the lunar crust that were projected to the Earth by impacts on the Moon. Similarly, analyses of the Martian surface soils and atmosphere by the and s led to the identification of meteorite fragments ejected by hypervelocity impacts on Mars. Images of Mars displayed land-forms wrought in the past by voluminous floodwaters, similar to those of the long-controversial of Washington State, USA. The record on Mars confirmed catastrophic flooding as a significant geomorphic process on at least one other planet. The first views of the Earth photographed by the crew of gave us the concept of and heightened international concern for protection of the global environment."

"As a graduate student, I encountered a book that still inspires me: Classic Papers in Genetics edited by . Sadly, it is now out of print, but it is a wonderful compendium of many groundbreaking papers,starting with Mendel’s ‘Experiments in Plant Hybridization’. It also includes several papers by my scientific hero, , who figured out the principle of as an undergraduate, and whose papers are a model of clarity and careful reasoning. I also really enjoy reading Peters’ prefaces to each paper, which place each work in its scientific and historical context."

"Flowers are organized into concentric s of s, s, s and s, with each of these floral organ types having a unique role in ... Sepals enclose and protect the flower bud, while petals can be large and showy so as to attract s (or people!). Stamens produce pollen grains that contain male gametes, while the carpels contain the ovules that when fertilized will produce the seeds. While the size, shape, number and elaboration of each of these organ types can be quite different, the same general organization of four floral organ types arranged in concentric whorls exists across all species. As I shall explain in this Primer, the ‘ABC model’ is a simple and satisfying explanation for how this conserved floral architecture is genetically specified. What is the ABC model? The ABC model was first explicitly articulated in 1991, in a seminal paper by and . Although s affecting floral organ identity had been known for centuries, it was the systematic analyses of these mutations, and of the phenotypes produced by double and triple mutants, that proved to be critical in developing the ABC model."

"Over a period of ten years, simultaneous measurement of storm rainfall and resulting during individual storms were made in small basins in the , California. By simple measurement, without any recording devices, data collected define a relation of basin lag time to drainage area. This lag time, expressed as time between center of mass of rainfall and center of mass of runoff, is a specific measure of some basin characteristics including the effect of . Using lag time relations, synthetic hydrography construction shows the effect of urbanization on peak discharge from a given storm. The method applied to one storm shows that urbanization increased the peak discharge by two fold."

"The excess of over loss to the is a surprisingly small percentage of the average precipitation. The average amount of water that falls as precipitation over the United States annually is 30 es. Of this total, 21 inches are returned to the atmosphere in the form of through the process of evaporation and transpiration from plants. The balance of 9 inches contributes to the maintenance of and the ."

"The fate of rivers would evidently not be disregarded by Leopold’s watchful eye. In the late 1950s, he and W.B. Langbein initiated what came to be called the Vigil Network, consisting of sections in small s where natural changes would be recorded regularly. Some of these have been operating continuously for half a century, and similar schemes are in operation in Israel and Sweden. Just as productive were some of Leopold’s rafting expeditions down rivers for which he needed depth and velocity data. In 1965, he surveyed 450 km of the in this manner (and again many years later with his distinguished collaborator, the physicist, soldier, and desert explorer ). Besides feeding into the morphometric work, these investigations paved the way for a concerted attack on the problems of and , presaged in a joint study of flood control with T. Maddock Jr. in 1954 and developed with T. Dunne in 1978 and D.L. Rosgen in the 1980s."

"When one observes the many and great changes that have occurred in some s since the beginning of the , he is inclined to the belief that a longer period of time was involved than he had been led to believe. is an example where lakes of great depth once existed in a locality that is now a true desert. Segments of giant fans, some faulted, have been built out on the dried-up lake basin. Some large s on the surface are so deeply weathered that a hammer blow will reduce them to . We are rapidly learning that certain are much more rapid than we have been wont to believe. But only recently have s attempted to determine by actual measurement process rates formerly the subject of general reasoning or speculation. Such measurement programs have documented the fact that rates of landscape change are greater than had earlier been suspected."

"Sensory data are filtered through the knowing apparatus of the human senses and made into perceptions and s. The human mind is also constructed in a , and its knowledge is in part created by the social and cultural context in which it comes to know the world. Knowledge of the world is therefore always constructed by the human mind in the working models of reality in the sciences. Fleeting impressions of criminal behavior are elaborated by individuals into complete accounts that they believe to be "true." The wrong people are identified as the criminals, and events are construed in ways that are consistent with the observer's emotions and prejudices. Scientific theories are judged by their persuasive power in the community of scientists. They advance and decline through discussions among scientists. In social and developmental psychology, most of the models specify about human interactions have variables with neither temporal nor directional priorities that can escape challenge."

"Psychological science has a great deal to contribute to social welfare in all societies, because the world's most pressing social problems are behavioral in nature—, hunger, , , low worker productivity, poor educational outcomes, and so forth. Thus, psychological research can inform to improve approaches to these important s. The relationship of psychological science to public policy is often troubled, however, by misunderstandings about the role of science in the policy making process. Many scientists fear that their research results will be “misused” by others whose values differ from those of scientists. Thus, psychologists are reluctant to publish research results that can be used to support policies contrary to their own values and hesitate to ask research questions that can generate politically incorrect results. In this article, I argue that psychological science has a primary responsibility to ask dangerous questions and to report results honestly, without fear of their use; that research is not translated directly into public policies; and that psychological science should not be perverted either by fear of political consequences or by compromising truth in a quest for power. Three research examples are given to illustrate the different faces of temptation to pervert psychological science in a misguided hope that scientists' own values will be reflected in public policies."

"This study examines the responses of mothers of girls about similarities and differences of their and . After these measures had been completed and scored, the investigator obtained zygosity diagnoses of the twins made by extensive blood‐group analyses. Of the 61 pairs of twins, 11 were misclassified by their mothers. Despite these mothers’ erroneous beliefs about the zygosity of their twins, they described the twins as having similarities and differences appropriate to their true degree of genetic relatedness."

"Originality and authenticity are synonymous to me in that, on a spiritual, more emotional level, it’s about staying grounded in who you are"

"Fashion innovation is hard, but when people come in with their own aesthetic, it’s really inspiring"

"The moments when I stop ­worrying about how I’m being perceived are really ­freeing."

"My education allowed me to speak more ­confidently about the things that I advocate for in my work"

"At the age of 14, I had a mic in my hand and they were asking me about representation and about topics that I think not many 14-year-olds have a chance to discuss"

"I feel like I’m only here because of the people who have come before me"

"But what I love so much about the collision between time and space that has happened right now is the fact that I am in no way the face of anything, because when I look at so many of my peers, there are people doing the same work, more work, different work than I am"

"My 20s has been a jarring experiment in figuring out how to give myself space to be mediocre at things"

"I have an unreasonable belief that I should be good immediately, and that's no way to discover new paths"

"I describe my future as being policy-adjacent"

"One of the biggest exercises in being curious has been the first step of self-work, of talking to myself about being bad, and allowing myself to be absolutely an amateur with no goals of being advanced at something"

"The best learning happens when we give ourselves permission to fumble through something new"

"Finding what fulfills us is the ultimate success"

"It's OK to have multiple passions and to pursue them in various capacities"

"We are not here to know, we are here to learn"

"We cannot rely on the status quo, and we will need to pursue unconventional paths"

"It's OK to not have all the answers"

"Let yourself be bad at things"