We have to defne the most important notions of the economy and let's beginwith the most fundamental, the value.
There is no economic theory without a theory of the value. Any modification to themost important economic theories relate to the value, implitly or explicitly.
Most of the economic theories begin with a different definition of the value: commercial value, labor value, actual value, etc.
The notion of value is central and fundamental in economy. The value is the most important caractéristic of a good. So what is value?
We will answer to this question with these topics: