Theory of Meaning by Jakob von Uexküll, translated by Joseph D. O'Neil, introduction by Dorion Sagan, University of Minnesota Press, 2011. The other available book is "Theoretical Biology", a reprint of the 1926 translation of "Theoretische Biologie" (1920). "Foray" is a popular introduction while "Theoretical Biology" is intended for an academic audience. Family His sons were the physician Thure von Uexküll and journalist Gösta von Uexküll. His daughter was Sophie Luise Damajanti von Uexküll ('Dana'). His grandson is the writer Jakob von Uexküll. Involvement with National Socialism In 2021 Gottfried Schnödl and Florian Sprenger proved that Uexküll was much more deeply involved in National Socialism than previously known. In 1933 he signed the Confession of German Professors to Adolf Hitler. In May 1934, together with Martin Heidegger, Carl Schmitt, and Alfred Rosenberg, among others, he was a founding member of the Committee for Philosophy of Law of the Academy for German Law, both of which were headed by Hans Frank. This committee was to accompany the National Socialist program with a philosophy of law appropriate to "Germanness." In doing so, Uexküll did not merely seek a connection to National Socialism, but actively participated in the collaborative elaboration of a National Socialist philosophy of law and attempted to substantiate it through his conception of Umwelt. Uexküll's doctrine led to a holistically based rejection of democracy and discharged itself in an identitarian logic in which everything is in its place according to plan and that which is in the wrong place should disappear. As late as 1933 Uexküll held hopes that the rise of Hitler to power might bring an end to the expansion of communism and the democratization of German society, for which he had an aristocratic antipathy, but his expectations were met with disappointment. In May of the same year Uexküll wrote a letter to Eva Wagner Chamberlain, daughter of Richard Wagner, and wife of his late friend Houston Stewart Chamberlain, lamenting that the ideas of her husband were being used by Nazism to justify the persecution of Jews in Germany, and describing racial discrimination against Jews as "the worst kind of barbarism". By the autumn of 1933, Uexküll evinced disapproval of Nazi policy and ideology, and afterwards tried to avoid political issues, although it sometimes proved impossible. In 1934, Uexküll dedicated his book A Foray into the Worlds of Animals and Humans to a Jewish fellow researcher Otto Cohnheim,