In all affective manifestations there are two elements: the motor states or impulses, which are primary; the agreeable or painful states, which are secondary—Unconscious (organic or protoplasmic) sensibility; micro-organisms—Chemical interpretation; psychological interpretation—Are there pure states of feeling?—Affirmative facts—The period of needs, the instinct of conservation-The period of primitive emotions—How they may be determined; the genetic or chronological method—Fear, anger, affection, the self-feeling, sexual emotion—Are joy and grief emotions?—The abstract emotions and their conditions—The passions are the equivalent in feeling of an intellectual obsession.
_Part I._—GENERAL PSYCHOLOGY.