" Isaiah Berlin saw this student of Johann Georg Hamann as both a "root of Romanticism" and a (*) "critic of the Enlightenment."
This thinker originated a method later adopted by Schleiermacher, the "psychological" method of interpretation through "divination." This thinker popularized the notion that each culture or era of history can be fundamentally different and should be understood "on its own terms." Isaiah Berlin saw this student of Johann Georg Hamann as both a "root of Romanticism" and a (*) "critic of the Enlightenment." He's not Rousseau, but this man's Treatise on the Origin of Language inspired Wilhelm von Humboldt to found modern linguistics. He argued that geography and language link a Volk, which should cultivate its distinctive traditions. For10 points, name this 18thÂ­century German thinker who coined the terms "folksong" and "nationalism." 
This thinker originated a method later adopted by Schleiermacher, the "psychological" method of interpretation through "divination.
Johann Gottfried (von) Herder