Alfred Marshall, Principles of Ecomics (1890) - Founder of Modern (Neo-classical) Ecomics. His book Principles of Ecomics was the dominant textbook in ecomics for a long time and it is considered to be his seminal work.
Alfred Marshall (1842-1924) is widely regarded as the doyen of modern economics and the founder of the Neoclassical School of Economics; he is best known for revolutionising the teaching of economics. In 1865 Alfred Marshall was elected to a fellowship at St John's College, Cambridge, UK, he became a lecturer in moral sciences in 1868 and in 1885 he was awarded Professorship in Political Economy at Cambridge where he remained until his retirement in 1908. Marshall's magnus opus Principles of Economics was first published in 1890 to worldwide acclaim and it cemented his reputation as one of the leading economists of his time.