"The idea of Darwinian natural evolution was paramount in Hayek’s early development. His family background was primarily in the natural sciences. While his maternal grandfather, Franz von Juraschek, was an economist and friend of some of the original mem bers of the Austrian school of economics, Juraschek died in 1910, when Hayek was ten or eleven. Despite Hayek’s precociousness, he could not have been much influenced by this grandfather. A far greater intellectual influence on Friedrich was his father, August, who was a medical doctor for the City of Vienna and a part-time professor of botany at the University of Vienna. Hayek mentioned the intellectual influence of his father on him in a late interview: “We have talked... about my contemporaries and to some extent about the influence of my father, which was of some importance.”"