A Preliminary Study of the Emotion of Love between the Sexes

A Plea for Monogamy

Algumas lições de psicologia e pedologia

Art of Love-Making

Children's Ways Being selections from the author's "Studies of childhood," with some additional matter

Code galant, ou, Art de Conter fleurette

De l'Amour Édition revue et corrigée et précédée d'une étude sur les oeuvres de Stendhal par Sainte-Beuve

De l'amour

Die Welt im Kinderköpfchen

Euphorion - Vol. I Being Studies of the Antique and the Mediaeval in the Renaissance

Euphorion - Vol. II Being Studies of the Antique and the Mediaeval in the Renaissance