Mach has a wide range of interests ranging from physics and philosophy to musicology, physiology, psychology, and the history of philosophy. His contributions to physics and philosophy were particularly well known.
Mach was critical of the mind-body or the mental-physical dualism of modern philosophy. He conceived the world as consisting of sensible elements such as color, sound, heat, pressure, and others, which were neither purely physical nor purely psychological. He argued that physics and psychology differed in their approaches and perspectives, not because of the difference in the objects of study. This monistic perspective led him to the idea of the unity of sciences. Unificationism conceives the human being as a unified whole constituted by spiritual and physical aspects. Unlike Mach, Unificationism does not explain its unity according to some common element. The precise meaning of unity is yet to be explored and explicated.
Mach contributed greatly to the formation of logical positivism, and his attempt at excluding metaphysical speculations and returning to direct experiences also influenced William James and Bergson.
Unification Aspects is designed to relate the subject of this article to Unification Thought and to aid teachers and researchers who wish to further pursue these topics from a unification perspective.