Herbert Spencer (1820-1903) was one of the leading 19th century English radical individualists. He began working as a journalist for the laissez-faire magazine The Economist in the 1850s. Much of the rest of his life was spent working on an all-encompassing theory of human development based upon the ideas of individualism, utilitarian moral theory, social and biological evolution, limited government, and laissez-faire economics. [The image comes from “The Warren J. Samuels Portrait Collection at Duke University.”]
See the Timeline of the Life and Work of Herbert Spencer: