From an academic perspective, Marx's work contributed to the birth of modern sociology. He has been cited as one of the 19th century's three masters of the "school of suspicion" alongside Friedrich Nietzsche and Sigmund Freud and as one of the three principal architects of modern social science along with Émile Durkheim and Max Weber. In contrast to other philosophers, Marx offered theories that could often be tested with the scientific method. Both Marx and Auguste Comte set out to develop scientifically justified ideologies in the wake of European secularisation and new developments in the philosophies of history and science. Working in the Hegelian tradition, Marx rejected Comtean sociological positivism in an attempt to develop a "science of society". Karl Löwith considered Marx and Søren Kierkegaard to be the two greatest Hegelian philosophical successors. In modern sociological theory, Marxist sociology is recognised as one of the main classical perspectives. Isaiah Berlin considers Marx the true founder of modern sociology "in so far as anyone can claim the title". Beyond social science, he has also had a lasting legacy in philosophy, literature, the arts and the humanities.William Roseberry (1997) "Marx and Anthropology" Annual Review of Anthropology, Vol. 26: pp. 25–46 (October 1997) </ref>