parts, so that the phrase “parts of the soul,” frequently employed by philosophers, is commonly used. By the word “parts”, however, they do not intend to imply that the soul is divided into parts as are bodies, but they merely enumerate the different activities of the soul as being parts of a whole, the union of which makes up the soul. Thou knowest that the improvement of the moral qualities is brought about by the healing of the soul and its activities.1 Therefore, just as the physician, who endeavors