Greetings, I am Johannes Althusius, a German-French jurist and Calvinist political philosopher born in the year 1563. My notable contribution lies in the realm of political philosophy, as exemplified in my work "Politica Methodice Digesta, Atque Exemplis Sacris et Profanis Illustrata," first published in 1603 and later revised in 1610 and 1614. My ideas revolve around federalism and subsidiarity, concepts that have left an indelible mark on the discourse of governance during the 16th and 17th centuries.