20 ideas
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
12056 | An ancestral relation is either direct or transitively indirect [Wiggins] |
12050 | Substances contain a source of change or principle of activity [Wiggins] |
13169 | I call Aristotle's entelechies 'primitive forces', which originate activity [Leibniz] |
13168 | My formal unifying atoms are substantial forms, which are forces like appetites [Leibniz] |
13170 | The analysis of things leads to atoms of substance, which found both composition and action [Leibniz] |
12055 | Sortal predications are answers to the question 'what is x?' [Wiggins] |
12059 | A river may change constantly, but not in respect of being a river [Wiggins] |
12052 | We never single out just 'this', but always 'this something-or-other' [Wiggins] |
12063 | Sortal classification becomes science, with cross reference clarifying individuals [Wiggins] |
12051 | If the kinds are divided realistically, they fall into substances [Wiggins] |
12053 | 'Human being' is a better answer to 'what is it?' than 'poet', as the latter comes in degrees [Wiggins] |
12054 | Secondary substances correctly divide primary substances by activity-principles and relations [Wiggins] |
13171 | Substance must necessarily involve progress and change [Leibniz] |
12047 | We refer to persisting substances, in perception and in thought, and they aid understanding [Wiggins] |
12057 | Matter underlies things, composes things, and brings them to be [Wiggins] |
12064 | The category of substance is more important for epistemology than for ontology [Wiggins] |
12049 | Naming the secondary substance provides a mass of general information [Wiggins] |
12065 | Seeing a group of soldiers as an army is irresistible, in ontology and explanation [Wiggins] |
13167 | We need the metaphysical notion of force to explain mechanics, and not just extended mass [Leibniz] |