Alfred Marshall, FBA (July 26, 1842 – July 13, 1924) is one of the most influential economists of his time.
His book, Principles of Economics (1890), is the dominant economic textbook in England for many years
It brings the ideas of supply and demand, marginal utility, and costs of production into a coherent whole.
He is known as one of the founders of neoclassical economics.
Although Marshall takes economics to a more mathematically rigorous level, he oes not want mathematics to overshadow economics and thus make economics irrelevant to the layman.