5 ideas
10053 | Geometrical axioms imply the propositions, but the former may not be true [Russell] |
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
10052 | Geometry is united by the intuitive axioms of projective geometry [Russell, by Musgrave] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |