In a 1959 essay written in honor of the Dewey Centennial Charles L. Stevenson stated.

Contemporary organismic and bio-social accounts of human behavior consider physical and psychological concepts as alternative or complementary linguistic descriptions of the same subject matter. The notion of complementarity is an important part of the organismic physicalistic synthesis which replaces the old duels between mechanism and vitalism, between physiology and psychology. The concept of complementarity comes from Bohr's solution for the difficulty of reconciling classical mechanics with quantum mechanics. He suggested that they are parallel and complementary rather than contradictory ways of (...) looking at the universe. The continuity of the energy transfer according to the electromagnetic theory and the atomicity of light effects are “complementary aspects of one reality in the sense that each expresses an important feature of the phenomena of light, which, although irreconcilable from a mechanical point of view, can never be in direct contradiction, since a closer analysis of one or the other feature in mechanical terms would demand mutually exclusive experimental arrangements”. (shrink)

The following statement from James’ 1884 essay in Mind is repeated in his later work and appears often in secondary sources as a summary of his celebrated theory of the emotions:Our natural way of thinking about these standard emotions is that the mental perception of some fact excites the mental affection called the emotion, and that this latter state of mind gives rise to the bodily expression. My thesis on the contrary is that the bodily changes follow directly the Perception (...) of the exciting fact, and that our feeling of the same changes as they occur IS the emotion. Common sense says, we lose our fortune, are sorry, and weep; we meet a bear, are frightened and run; we are insulted by a rival, are angry and strike. The hypothesis here to be defended says that this order of sequence is incorrect, that the one mental state is not immediately induced by the other, that the bodily manifestation must first be interposed between, and that the more rational statement is that we feel sorry because we cry, angry because we strike, afraid because we tremble, and not that we cry, strike, or tremble because we are sorry, angry, or fearful as the case may be. Without the bodily states following on the perception the latter would be purely cognitive in form, pale, colorless, destitute of emotional warmth. We might then see the bear and judge it best to run, receive the insult and deem it right to strike, but we would not actually feel afraid or angry. (shrink)