 Other early modern philosophers, of course, espoused the doctrine of sovereignty explicitly, and are thus more familiarly associated with it. French philosopher Jean Bodin was the first European philosopher to treat the concept extensively. His concept of souveraineté featured as a central concept in his work, De la république, which he wrote in 1576, during a time when France was sundered by civil war between Calvinist Huguenots and the Catholic monarchy. He viewed the problem of order as central and did not think that it could be solved through outdated medieval notions of a segmented society, but only through a concept in which rulers and ruled were integrated into a single, unitary body politic that was above any other human law, and was in fact the source of human law. This concept was sovereignty. Only a supreme authority within a territory could strengthen a fractured community.