Proposing an investigation into the sexuality of Greek men and women would mean projecting a modern concept onto the representations and sensibility of the Ancients. It is better to stick to the native categories. This book aims to outline, following its multiple paths, the profile of that force that the Hellenes deified under the name of Eros, making a mischievous young man the role of Aphrodite. Starting from a physiology of love, the study of the effects of Eros leads us to question the function of the poems and images that represent it and to then examine the institutions that it helps to sustain, as well as the spaces in which it exercises its power. power, as a builder of social relations. Recovered by philosophers and members of Orphic sects, Eros is finally revealed in his capacity as mediator of authentic initiatory paths.