Against nature? According to nature? For the Greeks first and the Romans later, homosexual relationships were a reality, a not insignificant component of established customs and culture. Starting from the factual nature of these relationships and not from the homosexual condition, which is a much more recent historical phenomenon, Eva Cantarella reconstructs a complex panorama in which the testimonies of poetry and myth are added to the analysis of the legal aspects of these relationships. , the documents of everyday life and the reflections of historians, doctors and philosophers. Beyond the substantial differences between the pedagogical ritual of Greek courtship and the brutal Roman code of conduct, which subdues in love and war, the bisexual culture of both peoples clearly emerges. Bisexual evidently from a masculine point of view. The woman who loves other women, except in exceptional cases, appears in the background as a threat, as a degeneracy, as a vicious and as a male caricature. Christianity will put an end to this traditional dichotomy between the active role and the passive role, the only ethical parameter until then, replacing it with the distinction between heterosexuality and homosexuality that is in force today. An essential work.