Combining Texts

All the ideas for 'fragments/reports', 'On the Syllogism IV' and 'Identity over Time'

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7 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]

9. Objects / E. Objects over Time / 1. Objects over Time

16025

If things change they become different - but then no one thing undergoes the change! [Gallois]

9. Objects / E. Objects over Time / 4. Four-Dimensionalism

16026

4D: time is space-like; a thing is its history; past and future are real; or things extend in time [Gallois]

9. Objects / F. Identity among Objects / 6. Identity between Objects

16027

If two things are equal, each side involves a necessity, so the equality is necessary [Gallois]

25. Social Practice / E. Policies / 5. Education / b. Education principles

13304

Learned men gain more in one day than others do in a lifetime [Posidonius]

27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure

20820

Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus]