1. That from the beginning to the end of life everything in the mental activities of man has a cause and a meaning, and that these causes and meanings may be traced back to infancy. No slip of the tongue is accidental; it has purpose and this purpose can be traced by psychoanalysis. So with hysteric phenomena: the paralyses, the sensory changes, all the queer and startling things represent something of importance and of value to the subconscious. 2. There is in man a subconscious mentality, having wills, purposes, strivings, desires, passions. These trends are the raw, native, uninhibited desires of man; they are our lusts, our crude unsocialized desires, arising out of a metaphysical, undifferentiated yearning called libido. In the Freudian "psychology" the libido is mainly sex desire and takes the form of homosexual feelings, incest feelings (desire for the father or for the mother--the oedipus complex), desire for the sister or brother.[1] (The human being, according to Freud, goes through three stages in his sex life: first, a sex attachment to himself marked by thumb sucking, masturbation, etc., second, an attachment to the same sex--homosexuality--and, finally, the attachment or desire for the opposite sex.) In the practical application of the Freudian psychology to the patients the sex conflicts (of which we shall speak shortly) are all important; the subconsciousness is largely taken up with sex and with efforts to obtain gratification for these sex desires. [1] The Freudians would protest against this. Libido is the life energy,--but all the Freudian analyses of actual cases published make libido sex, and usually "perverse." (I put the perverse in quotations because I fear to be called prudish by Freudians.)