The most reckless and treacherous of all theorists is he who professes to let facts and figures speak for themselves.
Alfred MarshallThe hope that poverty and ignorance may gradually be extinguished derives indeed much support from the steady progress of the working classes during the 19th century.
Alfred MarshallThough a simple book can be written on selected topics, the central doctrines of economics are not simple and cannot be made so.
Alfred Marshall