scientists with international reputation. Among them are Ludwig Boltzmann, Ernst Mach, Victor Franz Hess and Christian Doppler, prominent scientists in the 19th century. In the 20th century, contributions by Lise Meitner, Erwin Schrödinger and Wolfgang Pauli to nuclear research and quantum mechanics were key to these areas' development during the 1920s and 1930s. A present-day quantum physicist is Anton Zeilinger, noted as the first scientist to demonstrate quantum teleportation.
In addition to physicists, Austria was the birthplace of two of the most noteworthy philosophers of the 20th century, Ludwig Wittgenstein and Karl Popper. In addition to them, biologists Gregor Mendel and Konrad Lorenz as well as mathematician Kurt Gödel and engineers such as Ferdinand Porsche and Siegfried Marcus were Austrians.
A focus of Austrian science has always been medicine and psychology, starting in medieval times with Paracelsus. Eminent physicians like Theodore Billroth, Clemens von Pirquet, and Anton von Eiselsberg have built upon the achievements of the 19th century Vienna School of Medicine. Austria was home to psychologists Sigmund Freud, Alfred Adler, Paul Watzlawick and Hans Asperger and psychiatrist Viktor Frankl.
The Austrian School of Economics, which is prominent as one of the main competitive directions for economic theory, is related to Austrian economists Joseph Schumpeter, Eugen von Böhm-Bawerk, Ludwig von Mises, and Friedrich Hayek. Other noteworthy Austrian-born émigrés include the management thinker Peter Drucker, sociologist Paul Felix Lazarsfeld scientist Sir Gustav Nossal and the 38th Governor of California, Arnold Schwarzenegger.
See also: List of Austrian writers and Austrian literature
Complementing its status as a land of artists and scientists, Austria has always been a country of poets, writers, and novelists. It was the home of novelists Arthur Schnitzler, Stefan Zweig, Thomas Bernhard,