The theme of Aristotle's small and remarkable late work is the answer to the question of how the soul moves the body. This encompasses all voluntary or involuntary acts of self-movement in animal and human organisms. Thus, the work stands in the middle between Aristotle's general theory of motion and the biology and psychology discussed in his earlier writings, which he frequently references here. In "De motu," a comprehensive biological theory of animal and human action is formulated, aiming to address both action-theoretical and physiological questions. Aristotle also expresses himself for the first time on the famous innate Pneuma, in which he sees a mediating instance in the transmission of movement. This edition offers.