Thank you very much indeed for sending me your “Abriß der Logistik nach dem System der Principia Mathematica”B1929@Abriß der Logistik. Mit besonderer Berücksichtigung der Relationstheorie und ihrer Anwendungen, Wien, 1929, which I have looked at though I have not yet had time to read it properly. Your book on the “Logical Structure of the World”B1928@Der logische Aufbau der Welt, Berlin-Schlachtensee, 1928 duly reached me; as I have been very much occupied with unphilosophical labours, I have not had time to read it as it deserves, but from looking into it, I feel inclined to suppose that its views are those which I ought to hold, in the sense that they are the logical working out of premises which I accept. As soon as I get the necessary leisure, I shall hope to study both books with care. I am grateful to you not only for sending me the books, but for what you are doing to make the logistic point of view known in Germany.
