 Feigl’s treatment of the mind-body problem is his probably best well-known—and at the same time most controversial—contribution to philosophy. It is often lumped together with the views of U.T. Place, J.J.C. Smart, D.M. Armstrong, and other Australian, ‘materialist,’ philosophers (see, for example Kim 1998, pp. 1–2). Indeed, both Feigl’s and the Australians’ approach toward the mind-body problem share a number of similarities. On the whole, they are both versions of a non-dualistic (anti-Cartesian), physicalistically inspired ‘identity theory.’ However, there are significant differences between the Austrian (i.e. Feigl’s) and the Australian version of the identity theory (see Stubenberg 1997). Whereas the Australians take the physical as unproblematic and attempt to reduce the mental to the physical, Feigl takes the mental as unproblematic and attempts to integrate it into a sophisticated physicalistic conception of the world.