It is necessary to understand to himself that the driving force, or nerves, have the beginning in a brain where there is an imagination, exciting in their different ways just as the external feeling excites the general chuvstvilishche.
For philosophy of modern times basic value has dispute between empiricism and rationalism. Representatives of empiricism (Bacon) considered as the only source of knowledge of feeling, experience. Supporters of rationalism (Descartes) extol a role of reason and belittle a role of sensory perception.
the practical indicator revealing efficiency of a factor actually intellectual rational. Sensory perception is absolutely necessary in everyday practical life. The knowledge is much more important for the theory