Since the early twentieth century, philosophy in English-speaking universities has moved away from the humanities and closer to the formal sciences, becoming much more "analytic." Analytic philosophy is marked by emphasis on the use of logic and formal methods of reasoning, conceptual analysis, and the use of symbolic and/or mathematical logic, as contrasted with the Continental style of philosophy. This method of inquiry is largely indebted to the work of philosophers such as Gottlob Frege, Bertrand Russell, G.E. Moore, Georg Wilhelm Friedrich Hegel and Ludwig Wittgenstein.