Freud's ideas about how humans function within society dominated the first half of the 20th century. Today, our interest in a comprehensive picture of his theories is rekindled, and it is noteworthy that the modern interpretation does not differ much from Freud's understanding a century ago.

Civilization and Its Discontents is one of the most widely read books of the 20th century and remains relevant to this day. Science is now discovering that the psychological theories articulated by Freud in his studies can serve to connect various socio-political implications and align psychoanalysis with culture, sociology, ethnology, and religious studies.

This connection is referenced in his books Civilization and Its Discontents, Totem and Taboo, The Psychology of the Masses and the Analysis of the Ego, The Future of an Illusion, and Moses and Monotheism. Additionally, the early study "The 'Cultural' Sexual Ethics and Modern Nervousness," as well as the two studies he wrote in 1915 in the shadow of World War I, titled Current Observations on War and Death, should also be included.

We must not forget his letter to Einstein titled "Why War?". As Freud emphasizes in his work Civilization and Its Discontents, the program of "Creation" does not include the intention for humans to be "happy". What we call happiness likely derives from the sudden satisfaction of accumulated needs and is, by its nature, possible only as an episodic phenomenon.