In 1929, the editors of the Blätter für Deutsche Philosophie (the journal of the German Philosophical Society) decided to devote a double issue to the Philosophical Foundation of Mathematics. They consulted with the set-theoretician. A. Fraenkel about the selection of topics and the contributors. I was asked to write about intuitionism. The double issue of the journal appeared in the fall of 1930. The following translation of [1930, 19] is the work of Mr. Robert Kowalski.