Combining Texts

All the ideas for 'fragments/reports', 'On the Syllogism IV' and 'On 'Generation and Corruption''

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5 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]

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities

16718

Primary qualities are the cause of all the other sensible qualities [Albertus Magnus]

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]