Dialogue

 1 Phileb| opinions are enumerated in the fourth class. We seem to have an
 2 Phileb|  reason or mind is akin to the fourth or highest.~(5) Pleasures
 3 Phileb|      to reason and wisdom; the fourth, to knowledge and true opinion;
 4 Phileb|     are placed together in the fourth class of goods. The relation
 5 Phileb|     Thirdly, the nature of the fourth class. Fourthly, the meaning
 6 Phileb|      therefore there must be a fourth class, which is the cause
 7 Phileb|        the world, must not the fourth or cause which is the noblest
 8 Phileb|        Third, mind and wisdom.~Fourth, sciences and arts and true
 9 Phileb|      in the latter half of the fourth century B.C.; what eddies
10 Phileb|         SOCRATES: I say that a fourth class is still wanted.~PROTARCHUS:
11 Phileb|    compound, and add this as a fourth class to the three others.~
12 Phileb|       there was, as we said, a fourth class to be investigated,
13 Phileb|      may therefore be called a fourth principle?~PROTARCHUS: So
14 Phileb|  mixture and generation as the fourth.~PROTARCHUS: Certainly not.~
15 Phileb|        two, and the cause, the fourth, which enters into all things,
16 Phileb|       would you not put in the fourth class the goods which we
17 Phileb|      third class, and form the fourth, as they are certainly more