Combining Texts

All the ideas for 'fragments/reports', 'Against the Mathematicians' and 'On the Syllogism IV'

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6 ideas

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]

13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / b. Basic beliefs

20795

Some things are their own criterion, such as straightness, a set of scales, or light [Sext.Empiricus]

13. Knowledge Criteria / D. Scepticism / 6. Scepticism Critique

20794

How can sceptics show there is no criterion? Weak without, contradiction with [Sext.Empiricus]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]