In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Vaihinger discussed the relation between Swedenborg and this man's concept of two worlds, in a commentary on this man's Dreams of a Spirit Seer. He proposed the creation of a league to mediate international disputes in his essay "Perpetual Peace," and defined ratiocination as the judgment of a predicate with its subject in "The False Subtlety of the Four Syllogistic Figures. " He defined his best-known concept by claiming that nothing can be called good without qualification "except a good will" in his Foundations of the Metaphysics of Morals. For 10 points, name this author of The Critique of Judgment and Critique of Pure Reason who created the "categorical imperative. "
Social Science

Spin foam serves as a model for 4-geometries used to dynamically observe the quantum form of this force. Mossbauer spectroscopy of an iron-57 gamma emitter was used to measure Doppler redshift associated with this force in the Pound-Rebka experiment, and two lead balls were used to construct a torsion balance to measure the magnitude of this force in the Cavendish experiment. Conceptualized by wells in spacetime, for 10 points, identify this weakest fundamental force that causes objects in the air to accelerate to Earth at 9.8 meters per second squared.
Science

Adhemar, bishop of Le Puy, was the papal legate assigned to this event. He traveled with the largest contingent, raised by Raymond of Toulouse, who led his forces across northern Italy and into Dalmatia, where they clashed with the Byzantines. One branch lost a quarter of its men looting Hungary under the leadership of Walter the Penniless and Peter the Hermit. Alexius I's envoy to the Council of Piacenza would have preferred veterans capable of reversing the verdict of the Battle of Manzikert. FTP, the success of this movement was led by Godfrey of Bouillon and sanctioned by Pope Urban II at the Council of Clermont.

History