Ernst Laas (June 16, 1837, Fürstenwalde, Brandenburg, Prussia – July 25, 1885, Straßburg, Germany (now Strasbourg, France)) was a German positivist philosopher.
He was born at Fürstenwalde. He studied theology and philosophy under Friedrich Adolf Trendelenburg at Berlin, and eventually became a professor of philosophy at the University of Strasbourg (1872).[1] In his Kants Analogien der Erfahrung ("Kant's Analogies of Experiences", 1876) he keenly criticized Immanuel Kant's transcendentalism, and in his chief work Idealismus und Positivismus ("Idealism and Positivism", 1879–1884, 3 volumes), he drew a clear contrast between Platonism, from which he derived transcendentalism, and positivism, of which he considered Protagoras the founder. Laas in reality was a disciple of David Hume. Throughout his philosophy he endeavours to connect metaphysics with ethics and the theory of education.[2][3]
His chief educational works were Der deutsche Aufsatz in den ersten Gymnasialklassen (1868), and Der deutsche Unterricht auf höhern Lehranstalten (1872; 2nd ed. 1886). He contributed largely to the Vierteljahrsschrift für wissenschaftliche Philosophie (1880–82); the Literarischer Nachlass, a posthumous collection, was published at Vienna (1887).[4]