Dexippus, vindicated Aristotle’s Categories, [103], [563].
Dialectic, how related to Science or Philosophy, [47], [210], [272], [273]; form of putting questions in, [125], [275]; theses in, variously liable to attack and defence, [156], [285], [352]; as conceived by Plato, [208], [263]; by Aristotle placed with Rhetoric in the region of Opinion, [208], [266], [573]; opposed to Demonstrative Science and Necessary Truth, [209], [573]; concerned about the Common Axioms of all Science, [221], [272], [574], [584]; Aristotle claims to be specially original in his theory of, [262], [418]; as conceived and practised by Sokrates, [263], [436]; opposed by Aristotle to Didactic, [264], [377]; province of, [266], [573]; essentially contentious, [266], [378], [397]; uses of, [271], [574]; propositions, how classified in, [276]; procedure of, in contrast with that of Philosophy, [353], [584]; conditions and aims of the practice of, [354], [361], [378]; to be practised as a partnership for common intellectual profit, [355], [367]; part of the questioner in, [355] seq.; part of the respondent in, [361] seq.; respondent at fault in, [366]; questioner at fault in, [367]; four kinds of false argument in, [370]; outfit for practice of, [372]; one of four species of debate, [377]; when and why called eristic or sophistic by Aristotle, [379]; Aristotle’s distinction of Sophistic from, contested, [382], [393] seq.
Dialogues of Aristotle lost, [30], [32], [49].
Diaphanous, action of the, in vision, [466].
Dicto secundum quid ad dictum simpliciter, Fallacia a, [386]; how to solve, [412].
Didactic, confounded by Plato with Dialectic, [264]; distinguished from Dialectic by Aristotle, [264], [377]; species of Debate, [377]; scope and conditions of, [377]; see also [Demonstration].
Differences, study of, an organon of debate, [280].
Differentia, not in, but predicated of, a Subject, [68]; ranked with Genus in Aristotle’s list of Predicables, [276]; discriminated from Genus, [313]; definition of Species through Genus and, [333], [601]; is Form in the definition, [604]; logically prior to the Species, [607].
Diogenes of Apollonia, his view of the soul, [449].
Diogenes Laertius, his catalogue of Aristotle’s works, [28], compared with that of Anonymus, [29]; ignorant of the principal works of Aristotle known to us, [31]; catalogue of, probably of Alexandrine origin, [34], [41].