4 ideas
10053 | Geometrical axioms imply the propositions, but the former may not be true [Russell] |
10052 | Geometry is united by the intuitive axioms of projective geometry [Russell, by Musgrave] |
23221 | The brain, and all the mental events within it, consists entirely of sensitive and rational matter [Cavendish] |
18033 | The meaning of a representation is its role in thought, perception or decisions [Block] |