The famous quote above from the Tractatus Logico-Philosophicus just means that the categories we use to make sense of the world are part of us, and not part of the world. The boundaries that we draw around classes of objects – this is a chair, and that is not – . . .
Mises stresses both the purely formal character of praxeology, and the uniqueness of man set apart from animals by goal-directed action. To the extent the former is true, however, the latter becomes less unique to man, and we may usefully interpret animal behavior this way. This suggests that the study . . .