Combining Texts

All the ideas for 'talk', 'On the Syllogism IV' and 'The World'

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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]

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities

22593

Our sensation of light may not be the same as what produces the sensation [Descartes]

13. Knowledge Criteria / E. Relativism / 2. Knowledge as Convention

1556	By nature people are close to one another, but culture drives them apart [Hippias]

26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / f. Ancient elements

16569

The Hot, Cold, Wet and Dry of the philosophers need themselves to be explained [Descartes]

27. Natural Reality / A. Classical Physics / 1. Mechanics / b. Laws of motion

20964

Descartes said there was conservation of 'quantity of motion' [Descartes, by Papineau]