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An Inquiry into the Nature and Causes of the Wealth of Nations is the magnum opus of the Scottish economist Adam Smith, published on March 9, 1776 during the Scottish Enlightenment. It is a clearly written account of political economy at the dawn of the Industrial Revolution, and is widely considered to be the first modern work in the field of economics. The work is also the first comprehensive defense of free market policies. It is broken down into five books between two volumes. The Wealth of Nations was written for the average educated individual of the 18th century rather than for specialists and mathematicians. There are three main concepts that Smith expands upon in this work that form the foundation of free market economics: The Division of Labor, The Pursuit of Self Interest, and The Freedom of Trade.

The Wealth of Nations was published in 1776, during the Age of Enlightenment. It influenced not only authors and economists, but governments and organisations. For example, Alexander Hamilton was influenced in part by The Wealth of Nations to write his Report on Manufactures, in which he argued against many of Smith's policies. Interestingly, Hamilton based much of this report on the ideas of Jean-Baptiste Colbert, and it was, in part, to Colbert's ideas that Smith wished to respond with The Wealth of Nations. Many other authors were influenced by the book and used it as a starting point in their own work, including Jean-Baptiste Say, David Ricardo, Thomas Malthus and, later, Karl Marx and Ludwig von Mises. The Russian national poet Aleksandr Pushkin refers to The Wealth of Nations in his 1833 verse-novel Eugene Onegin.

Irrespective of historical influence, however, The Wealth of Nations represented a clear leap forward in the field of economics, similar to Sir Isaac Newton's Principia Mathematica for physics or Antoine Lavoisier's Traité Élémentaire de Chimie for chemistry. The Wealth of Nations is also important in a Scottish linguistic context on account of the fact the book is written in English and not in Scots Language, a somewhat rare occurrence for the time.

Smith addresses in The Wealth of Nations a problem that was torturing the best economic minds of his day. This problem was rooted in the means by which objects are valued. The two predominant theories of value in Smith's time were the so-called "Practical Theory of Value" and the labor theory of value, as delineated later by David Ricardo.

The economy of Germany is a highly developed social market economy. It has the largest national economy in Europe, the third-largest by nominal GDP in the world, and the sixth-largest by PPP-adjusted GDP. Due to a volatile currency exchange rate, Germany's GDP as measured in dollars fluctuates sharply, but it is among the world's top 4 since 1960. In 2025, the country accounted for 23.7% of the Euro area economy according to the International Monetary Fund (IMF). Germany is a founding member of the European Union and the eurozone.

Germany is the third-largest exporter globally with $1.66 trillion worth of goods and services exported in 2024. In 2024, Germany recorded a trade surplus worth $255 billion, ranking 2nd worldwide. The service sector contributes around 70% of the total GDP, industry 29.1%, and agriculture 0.9%. Exports accounted for 50.3% of national output. The top 10 exports of Germany are vehicles, machinery, chemical goods, electronic products, electrical equipment, pharmaceuticals, transport equipment, basic metals, food products, and rubber and plastics. Germany is the largest manufacturing economy in Europe, contributing around one third of all manufacturing in Europe, which makes it more resilient to global economic crises. Germany conducts applied research with practical industrial value and sees itself as a bridge between the latest university insights and industry-specific product and process improvements. It generates a great deal of knowledge in its own laboratories. Among OECD members, Germany has a highly efficient and strong social security system, which comprises roughly 25% of GDP. (Full article...)

"The laws of economics are to be compared with the laws of the tides, rather than with the simple and exact law of gravitation. For the actions of men are so various and uncertain, that the best statement of tendencies, which we can make in a science of human conduct, must needs be inexact and faulty. This might be urged as a reason against making any statements at all on the subject; but that would be almost to abandon life. Life is human conduct, and the thoughts and emotions that grow up around it. By the fundamental impulses of our nature we all—high and low, learned and unlearned—are in our several degrees constantly striving to understand the courses of human action, and to shape them for our purposes, whether selfish or unselfish, whether noble or ignoble. And since we must form to ourselves some notions of the tendencies of human action, our choice is between forming those notions carelessly and forming them carefully. The harder the task, the greater the need for steady patient inquiry; for turning to account the experience, that has been reaped by the more advanced physical sciences; and for framing as best we can well thought-out estimates, or provisional laws, of the tendencies of human action.

The term "law" means then nothing more than a general proposition or statement of tendencies, more or less certain, more or less definite. Many such statements are made in every science: but we do not, indeed we can not, give to all of them a formal character and name them as laws. We must select; and the selection is directed less by purely scientific considerations than by practical convenience. If there is any general statement which we want to bring to bear so often, that the trouble of quoting it at length, when needed, is greater than that of burdening the discussion with an additional formal statement and an additional technical name, then it receives a special name, otherwise not."

—Alfred Marshall, Principles of Economics, 1890

• ... that "gig" in "gig economy" comes from the slang term for individual appearances by performing artists?
• ... that The Sims 2: Open for Business has been used to teach business students?
• ... that the 2013 book Brick by Brick, about how The Lego Group reinvented itself, became a popular business text?
• ... that the University of Maryland's Iribe Center was partly funded by a businessman who dropped out of the university?
• ... that Stan Lee modeled Tony Stark after 20th-century business magnate Howard Hughes?
• ... that John Blackinger quit his job as the general manager of a professional football team to work in the dairy business?

June 21:

• 1967 - Pierre Omidyar, French-American businessman, founder of eBay, was born on this day.

• ... that Italy is the third largest producer of wine in the world?

• ...that Calouste Gulbenkian was known as Mr. Five Percent because he retained 5% of the shares of Royal Dutch/Shell, the second-largest corporation in the world by revenue, which he participated in the formation of in 1907?

• ...that prospect theory was developed by Daniel Kahneman and Amos Tversky in 1979 as a psychologically realistic alternative to expected utility theory?

• ...that Nobel laureate Amartya Sen's publications in the 1960s and 1970s helped develop social choice theory, which first came to prominence in the work by the American economist Kenneth Arrow?

• ...that Harvard economist Susan Athey was the first female recipient of the John Bates Clark Medal?

• ...that N. Gregory Mankiw left law school after earning his Ph.D. in economics from the Massachusetts Institute of Technology in 1984?

• ...that "Stagflation" is a term generally attributed to British politician Iain Macleod, who coined the term in a speech to Parliament in 1965?