 Concerning the human body and its functions (frs. 328–349 FHS&amp;G), Theophrastus seems to have followed Aristotle in postulating four basic qualities (hot, cold, dry, wet), and in ascribing to the heart a central role. He also emphasized the function of breath or spirit (pneuma), which is meant to keep the body and the soul of human beings together, linking psychic functions with physical motions (fr. 346 FHS&amp;G). In fact, it has been argued that in this case, too, Theophrastus diverged from Aristotle, since Aristotle thought that pneuma was concentrated in the area of the heart while Theophrastus claimed that it extends throughout the body; however, Aristotle’s position on this issue is controversial (see Longrigg 1993: 173–6).