In the last analysis the entire field of psychology may reduce to biological electrochemistry.

The unconscious of one human being can react upon that of another without passing through the conscious.

Religious illusion must bow to scientific truth. It is in total error about the nature of the true world. Only science is not an illusion.

When we share - that is poetry in the prose of life.

There is scarcely room for doubt that something in the psychological relation of a mother-in-law to a son-in-law breeds hostility between them and makes it hard for them to live together. But the fact that in civilized societies mothers-in-law are such a favourite subject for jokes seems to me to suggest that the emotional relation involved includes sharply contrasted components. I believe, that is, that this relation is in fact an 'ambivalent' one, composed of conflicting affectionate and hostile impulses.

The only shame in masturbation is the shame of not doing it well.

dream is the dreamer's own psychical act.