Entrepreneurial profit is the expression of the value of what the entrepreneur contributes to production.
Joseph A. SchumpeterThe function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way, by opening up a new source of supply of materials or a new outlet for products, by reorganizing an industry and so on.
Joseph A. Schumpeter