Wealth is the abundance of valuable financial assets or physical possessions which can be converted into a form that can be used for transactions. This includes the core meaning as held in the originating Old English word weal, which is from an Indo-European word stem.  The modern concept of wealth is of significance in all areas of economics, and clearly so for growth economics and development economics, yet the meaning of wealth is context-dependent. An individual possessing a substantial net worth is known as wealthy. Net worth is defined as the current value of one's assets less liabilities (excluding the principal in trust accounts). 
“ The secret only of wealth is the advance personal development in academic university but in capital business ownership great success time unit from investment in real and financial assets resources of economic value own or public stock for a greater worth value “
- Andrew Hernandez Navarro
At the most general level, economists may define wealth as "anything of value" that captures both the subjective nature of the idea and the idea that it is not a fixed or static concept. Various definitions and concepts of wealth have been asserted by various individuals and in different contexts.  Defining wealth can be a normative process with various ethical implications, since often wealth maximization is seen as a goal or is thought to be a normative principle of its own.   A community, region or country that possesses an abundance of such possessions or resources to the benefit of the common good is known as wealthy.
The United Nations definition of inclusive wealth is a monetary measure which includes the sum of natural, human, and physical assets.   Natural capital includes land, forests, energy resources, and minerals. Human capital is the population's education and skills. Physical (or "manufactured") capital includes such things as machinery, buildings, and infrastructure.
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Adam Smith, in his seminal work The Wealth of Nations, described wealth as "the annual produce of the land and labor of the society". This "produce" is, at its simplest, that which satisfies human needs and wants of utility.
In popular usage, wealth can be described as an abundance of items of economic value, or the state of controlling or possessing such items, usually in the form of money, real estate and personal property. An individual who is considered wealthy, affluent, or rich is someone who has accumulated substantial wealth relative to others in their society or reference group.
In economics, net worth refers to the value of assets owned minus the value of liabilities owed at a point in time.  Wealth can be categorized into three principal categories: personal property, including homes or automobiles; monetary savings, such as the accumulation of past income; and the capital wealth of income producing assets, including real estate, stocks, bonds, and businesses.[ citation needed] All these delineations make wealth an especially important part of social stratification. Wealth provides a type of individual safety net of protection against an unforeseen decline in one's living standard in the event of job loss or other emergency and can be transformed into home ownership, business ownership, or even a college education.[ citation needed]
Wealth has been defined as a collection of things limited in supply, transferable, and useful in satisfying human desires.  Scarcity is a fundamental factor for wealth. When a desirable or valuable commodity (transferable good or skill) is abundantly available to everyone, the owner of the commodity will possess no potential for wealth. When a valuable or desirable commodity is in scarce supply, the owner of the commodity will possess great potential for wealth.
'Wealth' refers to some accumulation of resources (net asset value), whether abundant or not. 'Richness' refers to an abundance of such resources (income or flow). A wealthy individual, community, or nation thus has more accumulated resources (capital) than a poor one. The opposite of wealth is destitution. The opposite of richness is poverty.
The term implies a social contract on establishing and maintaining ownership in relation to such items which can be invoked with little or no effort and expense on the part of the owner. The concept of wealth is relative and not only varies between societies, but varies between different sections or regions in the same society. A personal net worth of US$10,000 in most parts of the United States would certainly not place a person among the wealthiest citizens of that locale. However, such an amount would constitute an extraordinary amount of wealth in impoverished developing countries.
Concepts of wealth also vary across time. Modern labor-saving inventions and the development of the sciences have vastly improved the standard of living in modern societies for even the poorest of people. This comparative wealth across time is also applicable to the future; given this trend of human advancement, it is possible that the standard of living that the wealthiest enjoy today will be considered impoverished by future generations.
Industrialization emphasized the role of technology. Many jobs were automated. Machines replaced some workers while other workers became more specialized. Labour specialization became critical to economic success. However, physical capital, as it came to be known, consisting of both the natural capital and the infrastructural capital, became the focus of the analysis of wealth.[ citation needed]
Adam Smith saw wealth creation as the combination of materials, labour, land, and technology in such a way as to capture a profit (excess above the cost of production).  The theories of David Ricardo, John Locke, John Stuart Mill, in the 18th century and 19th century built on these views of wealth that we now call classical economics.
Marxian economics (see labor theory of value) distinguishes in the Grundrisse between material wealth and human wealth, defining human wealth as "wealth in human relations"; land and labour were the source of all material wealth. The German cultural historian Silvio Vietta links wealth/poverty to rationality. Having a leading position in the development of rational sciences, in new technologies and in economic production leads to wealth, while the opposite can be correlated with poverty.  
- Science and scientific method  
- Economics and continuous lifelong learning 
- Reading and education  
- Learning from rich people – billionaires and millionaires.  
The wealth of households amounts to US$280 trillion (2017). According to the eighth edition of the Global Wealth Report, in the year to mid-2017, total global wealth rose at a rate of 6.4%, the fastest pace since 2012 and reached US$280 trillion, a gain of US$16.7 trillion. This reflected widespread gains in equity markets matched by similar rises in non-financial assets, which moved above the pre-crisis year 2007's level for the first time this year. Wealth growth also outpaced population growth, so that global mean wealth per adult grew by 4.9% and reached a new record high of US$56,540 per adult. Tim Harford has asserted that a small child has greater wealth than the 2 billion poorest people in the world combined, since a small child has no debt. 
World's 15 richest cities in 2017. 
|New York City||$3 Trillion|
|San Francisco Bay Area||$2.3 Trillion|
|Los Angeles||$1.4 Trillion|
|Hong Kong||$1.3 Trillion|
In Western civilization, wealth is connected with a quantitative type of thought, invented in the ancient Greek "revolution of rationality", involving for instance the quantitative analysis of nature, the rationalization of warfare, and measurement in economics.   The invention of coined money and banking was particularly important. Aristotle describes the basic function of money as a universal instrument of quantitative measurement – "for it measures all things [...]" – making things alike and comparable due to a social "agreement" of acceptance.  In that way, money also enables a new type of economic society and the definition of wealth in measurable quantities, such as gold and money. Modern philosophers like Nietzsche criticized the fixation on measurable wealth: "Unsere ‘Reichen' – das sind die Ärmsten! Der eigentliche Zweck alles Reichtums ist vergessen!" ("Our 'rich people' – those are the poorest! The real purpose of all wealth has been forgotten!") 
In economics, wealth (in a commonly applied accounting sense, sometimes savings) is the net worth of a person, household, or nation – that is, the value of all assets owned net of all liabilities owed at a point in time. For national wealth as measured in the national accounts, the net liabilities are those owed to the rest of the world.  The term may also be used more broadly as referring to the productive capacity of a society or as a contrast to poverty.  Analytical emphasis may be on its determinants or distribution. 
Economic terminology distinguishes between wealth and income. Wealth or savings is a stock variable – that is, it is measurable at a date in time, for example the value of an orchard on December 31 minus debt owed on the orchard. For a given amount of wealth, say at the beginning of the year, income from that wealth, as measurable over say a year is a flow variable. What marks the income as a flow is its measurement per unit of time, such as the value of apples yielded from the orchard per year.
In macroeconomic theory the ' wealth effect' may refer to the increase in aggregate consumption from an increase in national wealth. One feature of its effect on economic behavior is the wealth elasticity of demand, which is the percentage change in the amount of consumption goods demanded for each one-percent change in wealth.
Wealth may be measured in nominal or real values – that is, in money value as of a given date or adjusted to net out price changes. The assets include those that are tangible ( land and capital) and financial (money, bonds, etc.). Measurable wealth typically excludes intangible or nonmarketable assets such as human capital and social capital. In economics, 'wealth' corresponds to the accounting term ' net worth', but is measured differently. Accounting measures net worth in terms of the historical cost of assets while economics measures wealth in terms of current values. But analysis may adapt typical accounting conventions for economic purposes in social accounting (such as in national accounts). An example of the latter is generational accounting of social security systems to include the present value projected future outlays considered to be liabilities.  Macroeconomic questions include whether the issuance of government bonds affects investment and consumption through the wealth effect. 
Environmental assets are not usually counted in measuring wealth, in part due to the difficulty of valuation for a non-market good. Environmental or green accounting is a method of social accounting for formulating and deriving such measures on the argument that an educated valuation is superior to a value of zero (as the implied valuation of environmental assets). 
Social class is not identical to wealth, but the two concepts are related (particularly in Marxist theory),  leading to the concept of socioeconomic status. Wealth at the individual or household level refers to value of everything a person or family owns, including personal property and financial assets. 
The upper class are schooled to maintain their wealth and pass it to future generations. 
The middle class views wealth as something for emergencies and it is seen as more of a cushion. This class comprises people that were raised with families that typically owned their own home, planned ahead and stressed the importance of education and achievement. They earn a significant amount of income and also have significant amounts of consumption. However, there is limited savings (deferred consumption) or investments, besides retirement pensions and home ownership. 
Although precise data are not available, the total household wealth in the world, excluding human capital, has been estimated at $125 trillion (US$125×1012) in year 2000.  Including human capital, the United Nations estimated it in 2008 to be $118 trillion in the United States alone.   According to the Kuznet's Hypothesis, inequality of wealth and income increases during the early phases of economic development, stabilizes and then becomes more equitable.
As of 2008 [update], about 90% of global wealth is distributed in North America, Europe, and "rich Asia-Pacific" countries,  and in 2008, 1% of adults were estimated to hold 40% of world wealth, a number which falls to 32% when adjusted for purchasing power parity.  According to Richard H Ropers, the concentration of wealth in the United States is inequitably distributed. 
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