Aristotle, who was a hearer of this last, turned philosophy into a science and reasoned more strictly, affirming that the elements of all things are substance and accident.[128] He said that there is one substance underlying all things, but nine accidents, which are Quantity, Quality, Relation, the Where, the When, Possession, Position, Action and Passion. And that therefore Substance was such as God, man and every one of the things which can fall under the like definition: but that as regards the accidents, Quality is seen in expressions like white or black; Quantity in “2 cubits or 3 cubits long or broad”; Relation in “father” or “son”; the Where in such as “Athens” or “Megara”; the When in such as “in the Xth Olympiad”; for Possession in such as “to have acquired wealth”; Action in such as “to write and generally to do anything”; and Passion in such as “to be struck.” He also assumes that some things have means and that others have not, as we have said also about Plato. [Sidenote: p. 40.] And he is in accord with Plato about most things save in the opinion about the soul. For Plato thinks it immortal; but Aristotle that it remains behind after this life and that it is lost in the fifth Body which is assumed to exist along with the other four, to wit, fire, earth, water and air, but is more subtle than they and like a spirit.[129] Again whereas Plato said that the only good things were those which concerned the soul and that these sufficed for happiness, Aristotle brings in a triad of benefits and says that the sage is not perfect unless there are at his command the good things of the body and those external to it. Which things are Beauty, Strength, Keenness of Sense and Completeness; while the externals are Wealth, High Birth, Glory, Power, Peace, and Friendship; but that the inner things about the soul are, as Plato thought: Prudence, Temperance, Justice and Fortitude.[130] Also Aristotle says that evil things exist, and come by contrariety to the good, and are below the place about the moon, but not above it. Again, he says that the soul of the whole ordered world is eternal, but that the soul of man vanishes as we have said [Sidenote: p. 41.] above. Now, he philosophized while delivering discourses in the Lyceum; but Zeno in the Painted Porch. And Zeno’s followers got their name from the place, _i. e._ they were called Stoics from the Stoa; but those of Aristotle from their mode of study. For their enquiries were conducted while walking about in the Lyceum, wherefore they were called Peripatetics. This then Aristotle.[131] 18. _About the Stoics._