Theology, alternative name for First Philosophy or Ontology, [59], [423].

Theophrastus, left in charge of Aristotle’s school and library, [15], [35]; directions to, in Aristotle’s will, [17], [18]; bought as well as composed books, [35]; disposition of his library, [35], [42]; wrote on Logic, [56]; distinguished Affirmation ἐκ μεταθέσεως, [122], [169]; followed Aristotle in treating of Modals, [144]; assumed convertibility of Universal Negative, [146].

Theses, how to find arguments for, [157]; art of impugning and defending, [180]; in Dialectic, how open to be impugned, [284]; chiefly Universal Affirmative, [281]; comparison of, as subjects of attack and defence, [285], [352], [300].

Thrasyllus, canon of, [27], [41]; tetralogies of, [44].

Thrasymachus, developed Rhetoric, [419].

Thomas Aquinas, his use of “exoteric,� [45].

Τί ἦν εἶναι, Τό, see [Essence] (Quiddity).

Timæus, Platonic, summary of the psychological doctrine in the, [446]-9.

Timarchus, friend of Aristotle, [17].

Time, none, outside of the Heaven, [277].