The Importance of Habits

Socrates is changed in quality according to the same species of change in quality, but in another time and again in another. If then it is possible that what is corrupted may again become one in number, this motion also will be one. There is a doubt similar to this whether there is one health essentially or if habits and passions are in essence in bodies. These doubts however are foreign from the present speculation; since all motion is continued it is also necessary that the motion which is simply one should be continued.