5 ideas
22593 | Our sensation of light may not be the same as what produces the sensation [Descartes] |
3448 | Do new ideas increase the weight of the brain? [Dance] |
8693 | An 'abstraction principle' says two things are identical if they are 'equivalent' in some respect [Boolos] |
16569 | The Hot, Cold, Wet and Dry of the philosophers need themselves to be explained [Descartes] |
20964 | Descartes said there was conservation of 'quantity of motion' [Descartes, by Papineau] |