A prolific writer and museum curator, his 1902 work Altersklassen und Männerbünde is still cited today for its groundbreaking emphasis on the central role of associations in the social organization of non-European peoples.

Schurtz’s doctoral thesis, supervised by Friedrich Ratzel, examined the distribution and cultural significance of the African throwing knife, a weapon he described as primarily ornamental.

Schurtz challenged both evolutionist and utilitarian accounts of social development, ultimately highlighting the double nature of money and its profound role in shaping inequality, rank, and collective life.

Schurtz proposed that money was not a unified concept but an “illusory unity” with two separate origins: “inside-money,” which emerged within communities to fulfill social tasks through symbols or sign-money, and “outside-money,” which developed through trade and commerce between societies.

[6] Robert Lowie, who led Berkeley’s anthropology department, noted that the book contains “one of Schurtz’s most signal services,” namely the explanation of “the early origin of political society” “without any deliberate legal enactment.”[7] While he hardly addressed European circumstances in the book, he identified men’s “pure drive to associate,” in contrast to the “unmoving, family-centered woman,” as the origin of such men’s associations among so-called “primitive peoples,” seeing them as the primary agents of nearly all higher forms of social evolution.