Yale University Alumni

"Pictures of space-time look misleadingly like pictures of space, and the novice must unlearn some of the conventions..."

"Quantum theory... formalism... uses no more than linear algebra and vector spaces. ...A particularly nice and accessible presentation of the requisite mathematics can be found in 's Quantum Mechanics and Experience (1992, Ch. 2)."

"[M]ost clear philosophical ideas can be presented intuitively, shorn of the manifold qualifications, appendices and terminological innovations that grow like weeds in academic soil."

"If one resolves the measurement problem by postulating additional variables beside the wave function, it is the dynamics of these variables which manifests the non-locality and which resists a fully Relativistic formulation."

"I believe that it is a fundamental, irreducible fact about the spatio-temporal structure of the world that time passes. ...The passage of time is an intrinsic asymmetry in the temporal structure of the world, an asymmetry that has no spatial counterpart. ...The belief that time passes ...has no bearing on the question of the 'reality' of the past or of the future. I believe that the past is real: there are facts about what happened in the past that are independent of the present state of the world and independent of all knowledge or beliefs about the past. I similarly believe that there is (i.e. will be) a single unique future. I know what it would be to believe that the past is unreal (i.e. nothing ever happened, everything was just created ex nihilo) and to believe that the future is unreal (i.e. all will end, I will not exist tomorrow, I have no future). I do not believe these things... Insofar as belief in the reality of the past and the future constitutes a belief in a 'block universe', I believe in a block universe. But I also believe that time passes, and see no contradiction or tension between these views."

"I have often felt that whatever is of value in this book could be found in Bell's "The Theory of Local Beables" (1987, Ch. 7)... this book will have served a great purpose if it does no more than encourage people to read Bell with the care and attention that he deserves."

"The sparks which fly when quantum theory collides with Relativity ignite conceptual brushfires of particular interest... problems about causation, time, and holism. Unfortunately much of the work... presupposes a considerable amount of familiarity with the physics. This is particularly sad since the physics is not, in most cases, very complicated."

"Metaphysics is ontology. Ontology is the most generic study of what exists. Evidence for what exists, at least in the physical world, is provided solely by empirical research. Hence the proper object of most metaphysics is the careful analysis of our best scientific theories (and especially of fundamental physical theories) with the goal of determining what they imply about the constitution of the physical world."

"The regrettably widespread opinion that there is no real non-locality inherent in the quantum theory is therefore deeply intertwined with the regrettably widespread opinion that the measurement problem can be painlessly solved without postulating either additional variables or any real collapse process."

"Many... would agree that Relativity prohibits something from going faster than light but disagree over just what something is."

"The central problem facing attempts to understand a quantum theory is how it manages to model empirical phenomena in a principled way. This is often referred to as "the measurement problem"..."

"The presentation of Bell's inequality needs no more than some algebra... Understanding Relativity also requires no more than algebraic manipulation... but would tax the patience of the average reader. So I have tried to present Relativity pictorially..."

"Unlike space-time theory, where there is substantial agreement about how to understand the best physics we have (General Relativity), quantum theory has always been a battleground of contention. Nothing one can say would command the assent of most physicists and philosophers."

"[P]rior to Newton, Galileo sought to specify the "intertial" motion of terrestrial objects—...the motion they would display if subject to no forces—and he concluded that such motion would be uniform circular motion. He arrived at this conclusion from his experimental work with inclined planes."

"Newton's First Law, the... Law of Inertia, refers only to bodies that are subject to no external forces. It is tempting to say that Newton postulates that such bodies "continue in the same state of motion," but such... would miss the revolutionary aspect... the First Law specifies exactly what counts as "the same state of motion." For Aristotle... a piece of aether in uniform circular motion about [earth,] the center of the universe is always in "the same state of motion," and so there would be no reason to seek out external causes... In Aristotle's physics, external causes are responsible for unnatural motion, such as a rock moving upward instead of down. So for Aristotle, the falling of a stone... requires no external cause, and the continued rotation of a sphere of fixed stars requires no external cause: this what these sorts of matter do by nature."

"[T]he most general question we can ask about matter is what sort of thing it is. ...[W]e might hold that matter is made of point-like particles, or of fields, or of one-dimensional strings, or of some combination of these, or of something else altogether. Given any of these ...there are further, more specific questions ...We will be concerned with the most general questions, rather than the more specific ones."

"[T]he science of thermodynamics... initially aimed at providing a precise account of how heat spreads through an object and from one object to another. But we can discover... detailed equations governing heat flow and still not have an account of what heat is. ...It is a characteristic of contemporary physics education that much more time is spent learning how to solve the equation and get a practical answer... than in... the nature of heat, or the nature of space and time, or the nature of matter. Physics students... fascinated by these foundational questions can find themselves frustrated by... classes that refuse to address them. This volume is dedicated to them as much as it is to philosophers..."

"[T]he need for a completely physical account of "measurement" procedures—are addressed in both volumes..."

"I hope... to have provided a framework sturdy enough and correct enough to serve both professional and amateur naval architects who propose to redesign the craft which carries us on our journey."

"[A]nother interpretation holds that Relativity requires only thatTheories be Lorentz invarient."

"Any book which attempts to deal with quantum theory, Special Relativity and General Relativity courts various forms of disaster."

"[T]he experimental verification of Bell's inequality constitutes the most significant event of the last half-century. ...[O]ur basic picture of space, time, and physical reality must change. These results, and the mysteries they engender, should be the common property of all who contemplate with wonder the universe we inhabit."

"[S]pace and time... do not appear to our senses: they have no color or flavor or sound or smell or tangible shape. ...[They] seem rather to have is a geometrical structure."

"The Theory of Relativity is presented, first and foremost, as a theory of the geometry of space-time. Special Relativity is explained in enough detail to solve specific problems about the behavior of clocks and rigid objects in a relativistic world. General Relativity is presented less rigorously. My aim... make the conceptual foundations of these theories absolutely clear..."

"Not at all. Even during the period that the United States was out of the Paris Agreement, our companies continued to innovate. We continued to reduce our carbon output. I’m from California which has two important roles. One, it’s a state like Greece with a strong grassroots focus on the quality of the environment. It’s also a state, because it is the fifth or sixth largest economy in the world which actually has the ability to set the standards on its own in our federal system, which then ripple out across the United States and across the rest of the world. California has moved very aggressively on energy transition, very aggressively on deployment of wind power and solar, and frankly, is a perfect match for Greece because we have a very similar geography, we have a very similar climate, and we also face the same imperative to protect our climate. For me, it was so poignant that at exactly the moment that I was looking through the smoke-filled skies of Athens, I was also reading the stories from home in California where we have literally the largest fires that my home state has ever confronted, driven by exactly the same extreme weather events which are a consequence of manmade climate change."

"When millions of people remain mired in poverty, no matter how hard they work, our whole economy suffers. Consigning millions of people to the economic margins has a serious adverse effect on the economy for all of us."

"The refundable child tax credit is not inflationary if paid for; is not a disincentive to work; and ought to be viewed as a public investment with a high rate of return."

"A refundable child tax credit can decrease infant mortality; improve the health and life expectancy of poor children and their parents; reduce exposure to abuse and neglect; reduce long-term health-care costs; and increase the future productivity, earnings and tax payments of child beneficiaries."

"Over the past year, President Trump has taken unprecedented actions to assert federal control over our economy and undermine the constitutional system on which that economy depends. In response, many leaders in the private sector—as well as in philanthropy, media, law and academia—have responded not with criticism, but with acquiescence and accommodation."

"Markets go up, markets go down."

"While the FMLA Family and Medical Leave Act] was a landmark achievement, it doesn’t go far enough. American workers and businesses need a universal paid leave program."

"In my experience, many leaders harbor deep concerns about Mr. Trump's lawlessness, weaponization of the government, and interference in markets. They refrain from public criticism not because they find nothing to criticize but because they're intimidated."

"Higher education helps create the kind of citizenry that is central to a democracy’s ability to function and perhaps even to survive."

"One does not have to agree with the sentiments being expressed by a speaker in order to be troubled by the idea that they would be suppressed because of their content."

"[May] twelfth was a day I had hoped would never come; Bob Rubin was returning to private life. I believed he had been the best and most important Treasury secretary since Alexander Hamilton in the early days of our Republic. Bob had also been the first head of the National Economic Council. In both positions he had played a decisive role in our efforts to restore economic growth and spread its benefits to more Americans, to prevent and contain financial crisis abroad, and to modernize the international financial system to deal with a global economy in which more than one trillion dollars crossed national borders every day."

"We invest in higher education because there’s a broad public purpose. Our colleges and universities are seen, rightly, as centers of learning, but they are also engines of economic growth... Institutions of higher education spur early-stage research of all kinds, create environments for commercializing that research, provide a base for start-up and technology hubs, and serve as a mentoring incubator for new generations of entrepreneurs and business leaders."

"Looking back, what most prepared me for the life I’ve led was the open exchange of ideas that I experienced in college and law school... I have seen firsthand the way America’s higher-education system strengthens our nation."

"Bill Clinton and his two treasury secretary enablers, Robert Rubin and Larry Summers, instituted a system of unregulated capitalism that has resulted in financial anarchy. This anarchic form of capitalism, where everything, including human beings and the natural world, is a commodity to exploit until exhaustion or collapse, is justified by identity politics. It is sold as “enlightened liberalism” as opposed to the old pro-union class politics that saw the Democrats heed the voices of the working class. Financial anarchy and short-term plunder have destroyed long-term financial and political stability. It has also pushed the human species, along with most other species, closer and closer towards extinction."

"Our political system is in terrible shape. And that's not a partisan comment, though I do think Trump is doing just immense damage to our country, in his economic policies and his actions. But in neither party are we talking about a lot of what we need to talk about."

"With its underlying principles of free expression and academic freedom, the university system is one of the nation’s great strengths. It is not to be taken for granted. Undermining higher education would harm all Americans, weakening our country and making us less able to confront the many challenges we face."

"We’ve spoken to many leaders in business and finance who, when it comes to economic policy, are open to the premise that Mr. Trump is a normal presidential candidate. We strongly disagree. The two of us have been involved in business, government and policy for many years, with more than a century of experience between us. We’ve worked with elected officials and business leaders across the ideological spectrum... When it comes to economic policy, Mr. Trump is not a remotely normal candidate. A second Trump term would pose enormous risks to our economy."

"Some argue that many dire predictions raised at the start of Mr. Trump’s term did not come to pass. But he has expressed regret that his term was less radical than he would have liked — and has promised that his second term would be nothing like the first. From 2017 to 2021, Mr. Trump, while extreme in many respects, was constrained by key appointees who came from the traditional conservative establishment and by the need to appeal to the business community as he sought re-election. If he wins this November, he’s made clear that he’ll choose appointees who will be submissive to him, and he will have no looming re-election campaign providing an incentive to curb his most extreme impulses."

"Mr. Trump would also take unprecedented action to diminish the independence of the Federal Reserve, pressuring it to set interest rates for his short-term political gain rather than the long-term health of the economy... Such actions could do great damage to our markets and to our economy by politicizing Federal Reserve Board interest rate decisions and undermining the broader credibility of the Fed."

"Nearly every element of Mr. Trump’s second-term agenda would create great risk of economic harm. In aggregate, there is a high likelihood that his agenda would lead to chaos and unpredictability, including global instability, in that way reducing investment and business activity. Meanwhile, inflation would be increased by tariffs, immigration restrictions and larger fiscal deficits. Some may feel that we made it through one Trump term and are thus likely to make it through another. But a more apt analogy is that after we survived one round of economic Russian roulette, Donald Trump is asking us to take another spin — only this time with many more bullets in the chamber. That would be a very dangerous game."

"What's so sad to me… is we [the United States] have such tremendous strengths and so many advantages. And I think the damage we're doing is very substantial. Attacking our research, attacking science and basic research, attacking our universities, immigration policy that makes no sense whatsoever."

"ECB [European Central Bank] President Mario Draghi’s famous promise to do ‘whatever it takes’ to preserve the eurozone was a masterly move to buy time. But monetary policy cannot solve the currency union’s problems."

"Robert Rubin stands out as the poster child for the revolving door that exists between Wall Street and Washington. Rubin started his career by making a fortune at Goldman Sachs, where he worked for twenty-six years, including two years as its co-chairman. In 1993, President Clinton appointed him head of the National Economic Council, and in 1995 he became treasury secretary. While in government he spearheaded financial deregulation, including the repeal of Glass-Steagall. He also prevented the regulation of derivatives. In 1999, Rubin returned to Wall Street, and after brokering a deal with Republicans to legalize the $70 billion merger between Citicorp and Travelers Group, he was hired by the newly formed Citigroup and received about $15 million a year for his services. Less than a decade later-a decade in which Rubin earned more than $126 million at Citigroup-taxpayers bailed out his megabank because of the enormous risks Rubin and others encouraged it to take. In 2010, the bipartisan Financial Crisis Inquiry Commission (FCIC) voted unanimously to refer Rubin to the Justice Department for "potential fraud" for misleading investors about Citigroup's exposure to subprime mortgages. When DOJ declined to act, Phil Angelides, chair of the FCIC, said, "It's been a disappointment to me and others that the Justice Department has not pursued the potential wrongdoing by individuals identified in the matters we referred to them. At the very least, they owe the American people the reassurance that they conducted a thorough investigation of individuals who engaged in misconduct." I couldn't agree more."

"For our country to succeed economically, our market-based system must function alongside strong, effective government. Strong, effective government, in turn, requires a functioning democratic process."

"In the United States, refusal to confront a longer-term fiscal threat is not new."

"If you look at the numbers over the last few years and you look at the growth we've had, which has been very good growth, some fair portion of that is because of immigration and the increase in the labor force."