Concord is order, harmony, balance, it is a moral principle that inspires pacific coexistence within the civic community; this is the image delivered by IV century philosophical and political thought. Such a notion was developed within a speculation over spaces and places considered in their faculty of producing or hindering the establishment of a condition of ὁμονοεῖν. In the IV century cultural horizon the sea figured both as the space of inequality, violence and power struggle, as opposed to the earth that produced concord and relations of friendship, and also as a vehicle of ideas that associated freedom and concord, a bulwark for democracy. Athens’s action on the sea was just as much a model for both the positive and negative notion. G...