5 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
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] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
20948 | Human cultures are organisms which grow, and then fade and die [Spengler, by Bowie] |