Combining Texts

All the ideas for 'works', 'The World' and 'Platonism and the Spiritual Life'

expand these ideas     |    start again     |     specify just one area for these texts

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5 ideas

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]

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]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature

23060

The good is not relative, but is rooted in facts about human needs [Santayana]

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]