Combining Philosophers

All the ideas for Speussipus, Augustus De Morgan and D.J. O'Connor

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13 ideas

3. Truth / A. Truth Problems / 5. Truth Bearers

3745	Must sentences make statements to qualify for truth? [O'Connor]

3. Truth / C. Correspondence Truth / 1. Correspondence Truth

3742	Beliefs must match facts, but also words must match beliefs [O'Connor]

3. Truth / F. Semantic Truth / 2. Semantic Truth

3744	The semantic theory requires sentences as truth-bearers, not propositions [O'Connor]

3749	What does 'true in English' mean? [O'Connor]

5. Theory of Logic / A. Overview of Logic / 4. Pure Logic

3746	Logic seems to work for unasserted sentences [O'Connor]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

5. Theory of Logic / G. Quantification / 2. Domain of Quantification

17743

De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki]

7. Existence / B. Change in Existence / 4. Events / c. Reduction of events

3747	Events are fast changes which are of interest to us [O'Connor]

9. Objects / B. Unity of Objects / 2. Substance / c. Types of substance

594	Speusippus suggested underlying principles for every substance, and ended with a huge list [Speussipus, by Aristotle]

11. Knowledge Aims / A. Knowledge / 4. Belief / a. Beliefs

3743	We can't contemplate our beliefs until we have expressed them [O'Connor]

3748	Without language our beliefs are particular and present [O'Connor]

28. God / C. Attitudes to God / 5. Atheism

2632	Speusippus said things were governed by some animal force rather than the gods [Speussipus, by Cicero]