Combining Texts

Ideas for 'System of Logic', 'Meditations' and 'works'

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts


3 ideas

6. Mathematics / A. Nature of Mathematics / 1. Mathematics
Surely maths is true even if I am dreaming? [Descartes]
I can learn the concepts of duration and number just from observing my own thoughts [Descartes]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / a. Units
Numbers must be assumed to have identical units, as horses are equalised in 'horse-power' [Mill]