MICHAEL SPENCE

The combination of a workable basic formula and the capacity to improve over time is what one hopes for in any aspect of society: business, government, the non-profit sector.

My father once said about being a parent that it is the only thing you do that requires a very long period of learning, and at about the time that you are becoming competent, you don't need the skills anymore. Notwithstanding this modest assessment of their parenting skills, they were wonderful parents.

I was not thinking about infinite multipliers when I was 10. But I did have a father who was a Ph.D. in commerce and finance and an intellectual man. And so I had a feeling, probably about the time I went to college, that I would try to be a scholar and teacher, but I didn't know which field.

One way to measure the size of a company, industry, or economy is to determine its output. But a better way is to determine its added value - namely, the difference between the value of its outputs, that is, the goods and services it produces, and the costs of its inputs, such as the raw materials and energy it consumes.

Digitally enabled supply chains initially increased efficiency and dramatically shortened lead times. Capital was mobile; labor, less so. Economic activity (production, research, design, etc.) moved to any accessible country or region that had relatively inexpensive labor and human capital.

Although everyone does benefit from lower-priced goods and services, people also care greatly about the chance to be productively employed and the quality of their work. Declining employment opportunities feel real and immediate; the rise in real incomes brought by lower prices does not.

We tend to think that employment is employment, and we don't ask the question: is this rewarding employment? Research establishes pretty clearly that typical notions of happiness - that more is better - really don't correspond to the way people think and feel.

The research side of academic life is often viewed from the outside as a solo and, at times, lonely activity. In fact, it is quite the opposite: a communal activity in significant part where interaction and interchange generate ideas and critiques of them.

I picked economics at the end of my undergraduate time because it seemed to be a really nice combination of theory, including mathematical theory on one hand, and things that are quite practical that you can touch and see and feel. So I picked it, and I consciously thought of it as an experiment to see if I liked it. And it worked.

It is a wonderful and unexpected honor to receive the Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel. Receiving this prize with Joseph Stiglitz and George Akerlof, whose work I have learned from and admired, makes it even more gratifying.

Globalization is the process by which markets integrate worldwide.

Globalization has redefined the competition for employment and incomes in the United States. Tradeoffs will have to be made between the two.

For highly indebted governments, low interest rates are critical to keep debt levels sustainable and ease pressure to restructure debt and recapitalize banks. The shift to a high sovereign-debt-yield equilibrium would make it impossible to achieve fiscal balance.

China's economic transformation began with the introduction in the 1980s of market incentives in the agricultural sector. These reforms were followed by a gradual opening to the global economy, a process that accelerated in the early 1990s.

For physical goods, there are costs associated with logistics and lead times, owing to inventories and poor forecasts of the market. With digital capital-intensive technology, however, production will inevitably move toward the final market, wherever it is. This re-localization constitutes a major shift in the structure of global supply networks.

Monetary policy should never have been expected to shift economies to a sustainably higher growth trajectory by itself.

During my Ph.D. program, I became interested in the informational structure of markets that turned into the work on signaling, which was the part of my early work that was recognized for the Nobel Prize, but it was not really a subject at the time.

Properly targeted public investment can do much to boost economic performance, generating aggregate demand quickly, fueling productivity growth by improving human capital, encouraging technological innovation, and spurring private-sector investment by increasing returns.

Actions aimed at supporting deleveraging and balance-sheet repair - such as recognizing losses, writing down assets, and recapitalizing banks - carry longer-term benefits but short-term costs.

Reforms aimed at increasing an economy's flexibility are always hard - and even more so at a time of weak growth - because they require eliminating protections for vested interests in the short term for the sake of greater long-term prosperity.

Robotics has already made significant inroads in electronics assembly, with sewing trades - traditionally many countries' first entry point to the global trading system - likely to come next.

A global economy that is levering up, while unable to generate enough aggregate demand to achieve potential growth, is on a risky path.

Education is, in the end, about individual interactions and about learning.

On their own, tariff and trade barriers, if viewed as transitory negotiating tactics, will not significantly change global investment patterns or the structure of global supply chains and employment.

Labor, no matter how inexpensive, will become a less important asset for growth and employment expansion, with labor-intensive, process-oriented manufacturing becoming a less effective way for early-stage developing countries to enter the global economy.