6 ideas
17744 | De Morgan started the study of relations and their properties [De Morgan, by Walicki] |
13501 | De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD] |
16669 | Everything that exists is either a being, or some mode of a being [Malebranche] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
12726 | In a true cause we see a necessary connection [Malebranche] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |