📓 Alfred Marshall (1842-1924) is considered as one of themost influential economists of his time. His specialty wasmicroeconomics - the study of individual markets andindustries, as opposed to the study of the whole economy.His most important book was "Principles of Economics"(1890), which was for many years the Bible of Britisheconomics.Marshall was the first principal of University College, Bristol(1877-81), and a professor at the University of Cambridge(1885-1908), he reexamined and extended the ideas of classicaleconomists such as Adam Smith and David Ricardo.