Understanding Early Economic Thought on Wealth

The question asks about a prominent figure in early economic thought who considered labor to be a primary source of wealth and argued for its inclusion in estimates of national wealth. This idea is a fundamental concept in the history of economic theory, particularly concerning the origins of value and the components of national prosperity.

Identifying the Thinker: Labor as the Father of Wealth

Several historical figures have contributed to our understanding of economics. The specific opinion that "labor was the father of wealth" is strongly associated with one of the options provided. Let's examine the key figure related to this concept.

William Petty (1623-1687) was an English economist, scientist, and statistician. He is considered one of the earliest and most important figures in the history of economics, particularly for his work in 'political arithmetic', which aimed to apply quantitative methods to economic and social phenomena. Petty explored the sources of wealth and value in society.

Petty's views on wealth were groundbreaking for his time. While mercantilists often focused solely on gold and silver as wealth, Petty recognised the importance of productive activities. He argued that labor, combined with land, was the fundamental source of wealth. He is widely credited with expressing the idea, often summarised as "labour is the father and land the mother of wealth".

Furthermore, Petty was one of the first to attempt systematic measurements of national income and wealth, including estimating the value of the labor force itself as part of the nation's capital or wealth stock. This directly aligns with the idea that labor must be included in any estimate of national wealth.

Analyzing the Other Options

• William Far: William Farr (note the spelling) was a 19th-century British epidemiologist and statistician, primarily known for his work on vital statistics and public health. While a statistician, his focus was not on the fundamental sources of national wealth in the way Petty discussed it.
• William C. Pyle and Flamholtz: Eric Flamholtz and William C. Pyle are prominent figures in the field of human resource accounting (HRA), a concept developed much later than Petty's time (primarily from the 1960s onwards). HRA deals with accounting for people as an organizational resource, which is distinct from the concept of labor as the fundamental source and component of *national* wealth in early economic thought.

Based on the historical context and the specific phrase and concept mentioned in the question, William Petty is the figure who held the opinion that labor was "the father of wealth" and should be included in national wealth estimates.

Therefore, the correct answer is William Petty.

Revision Table: Key Thinkers and Wealth Concepts

Additional Information: Political Arithmetic and National Wealth Estimation

William Petty's work in 'political arithmetic' was a precursor to modern statistics and econometrics. He attempted to quantify economic variables like population, income, and wealth using available data, even if incomplete. His efforts to measure national wealth went beyond tangible assets like land and goods; he recognised that the productive capacity of the people – their labor – was also a form of wealth.

Petty tried to estimate the total value of the population of England and Wales, considering them as a form of "stock" or capital that generated income through their labor. This was a radical idea at the time and highlights his view of labor not just as a cost, but as a valuable asset contributing significantly to national wealth.

This perspective laid some groundwork for later economic theories, including certain aspects of the labor theory of value developed by classical economists like Adam Smith and David Ricardo, although their formulations were different and more detailed.