The quantity of heat depends upon tension, and tension upon excitation. Normal stimulus is furnished by Innate, the spirit, a segment of Universal Intelligence. Too much or two little excitation, stimulation, is the result of over-tension. Morbid impulses are qualified and differentiated as animal, destructive, homicidal, suicidal, uncontrollable, and especially those of an insane character. An impulse denotes action, not an entity.
Function is the special and normal action of any organ or part of a living animal.
This includes the natural action of any mental faculty. Pathological functions are those performed in a greater or lesser degree than normal. Force is that power which produces or arrests motion, that which may be converted into motion, the rate of transforming energy. Vitality is the vigorous active principle upon which individual life depends. Vital force is that principle of life which imparts energy.