The first is quite matter-of-fact. It states that the movements and activities of a large part of the body are outside of the realm of consciousness, such as the activities of the great viscera--heart, lungs, intestines, liver, blood vessels, sex glands--and are largely operated by the vegetative nervous system.[1] There are influences pouring into the brain from these organs, together with influences from muscles, joints, tendons, and these influences, though not consciously itemized, are the subconsciously received stimuli which give us feelings of vigor, energy, courage, hopefulness, or the reverse, according to the state of the organism. In health the ordinary result of these stimuli is good, though people may have health in that no definite disease is present, and yet there is some deficiency in the energy-arousing viscera which brings a lowered coenesthesia, a lessened vigor and lowered mood. In youth the state of the organs brings a state of well feeling; in old age there is a constant feeling of a low balance of energy and mood, and the person is always on the verge of unpleasant feeling. In the great change periods of life--at puberty and the climacteric (or the menopause)--the sudden change in the activity of the sex organs may produce great alterations[2] in the coenaesthesia and therefore in the energy and mood of the individual. [1] This is not the place to describe the vegetative nervous system. (It was formerly called the sympathetic nervous system, but this term is now limited to one part of this system, and the term autonomic to another part, although some writers still use the term sympathetic for the whole, and others [the English] the term autonomic for the whole.) This system is the nervous mechanism of organic life, regulating heart, lungs, blood vessels, intestines, sex organs, acting together with endocrines, etc. A huge amount of work has been done of late years on this system and we know definitely that it stimulates, inhibits and regulates these organs, and also that it records their activities. We are commencing to believe that this system is fully as important, in mental life, as the brain. See Langley, Schaeffer, Higier, etc. [2] This is especially true of the menopause in women, and often enough of each menstrual period. That there is a climacteric in men is not so clear, but something corresponding to it occurs, at least in the case of some men.