Nature (Natur), 9-11, 18, 25, 47 n. 2, 48, 60, 63, 65 + fn, 70-71, 89, 95, 98-100, 106, 112, 144-145, 152, 165, 179, 199, 211, 361-363, 377, 378, 388, 388 n. 9, 398-400, 401 (Yorck), 404, 412-413, 415, 417 n. 4, 418, 428 (Aristotle); 429, 431, 432 n. 30, 434 (Hegel); thing of n., natural thing (Naturding), 48, 63, 99-100, 211; surrounding world of… (Umweltnatur), 71, 381, 413. See also intelligibility (unintelligibility) (BT)