Considers the incompatibility of civilisation and individual happiness, and the tensions between the claims of society and the individual. This work focuses on what the author perceives to be one of society's greatest dangers; 'civilised' sexual morality.

Civilisation and Its Discontents (Das Unbehagan in der Kultur) (1930)
‘Civilized’ Sexual Morality and Modern Nervous Illness (Die “Kultural” Sexualmoral und die moderne Nervositat) (1908)