Wilhelm Wundt — German Psychologist born on August 16, 1832, died on August 31, 1920

Wilhelm Maximilian Wundt was a German physician, physiologist, philosopher, and professor, known today as one of the founding figures of modern psychology. Wundt, who noted psychology as a science apart from biology and philosophy, was the first person to ever call himself a psychologist. He is widely regarded as the "father of experimental psychology". In 1879, Wundt founded the first formal laboratory for psychological research at the University of Leipzig. This marked psychology as an independent field of study. A Review of General Psychology survey, published in 2002, ranked Wundt as the 93rd most cited psychologist of the 20th century, tied with Edwin Boring, John Dewey, and Amos Tversky... (wikipedia)

Physiology and psychology cover, between them, the field of vital phenomena; they deal with the facts of life at large, and in particular with the facts of human life.
The materialistic point of view in psychology can claim, at best, only the value of an heuristic hypothesis.
Hence, even in the domain of natural science the aid of the experimental method becomes indispensable whenever the problem set is the analysis of transient and impermanent phenomena, and not merely the observation of persistent and relatively constant objects.
Physiology is concerned with all those phenomena of life that present them selves to us in sense perception as bodily processes, and accordingly form part of that total environment which we name the external world.
The results of ethnic psychology constitute, at the same time, our chief source of information regarding the general psychology of the complex mental processes.