 Thomas Bradwardine (c. 1300–1349) wrote his Insolubles at Oxford sometime between 1321 and 1324. It became one of the most important works on the topic in the Middle Ages. In fact, in the late 1350s, Ralph Strode, in his own treatise on the topic, surveys the earlier views (quoting Bradwardine’s own survey and theory almost verbatim), and then says (Spade 1981: 116):