Along with Rousseau's "" (1762), Locke's "Some Thoughts Concerning Education" was one of the foundational eighteenth-century texts on educational theory. In Britain, it was considered the standard treatment of the topic for over a century. For this reason, some critics have maintained that "Some Thoughts Concerning Education" vies with the "Essay Concerning Human Understanding" for the title of Locke's most influential work. Some of Locke's contemporaries, such as seventeenth-century German philosopher and mathematician Gottfried Leibniz, believed this as well; Leibniz argued that "Some Thoughts" superseded even the "Essay" in its impact on European society.