24 ideas
22271 | Aristotle was the first to use schematic letters in logic [Aristotle, by Potter] |
11060 | Aristotelian syllogisms are three-part, subject-predicate, existentially committed, with laws of thought [Aristotle, by Hanna] |
18909 | Aristotelian sentences are made up by one of four 'formative' connectors [Aristotle, by Engelbretsen] |
8080 | Aristotelian identified 256 possible syllogisms, saying that 19 are valid [Aristotle, by Devlin] |
13912 | Aristotle replaced Plato's noun-verb form with unions of pairs of terms by one of four 'copulae' [Aristotle, by Engelbretsen/Sayward] |
8071 | Aristotle listed nineteen valid syllogisms (though a few of them were wrong) [Aristotle, by Devlin] |
13819 | Aristotle's said some Fs are G or some Fs are not G, forgetting that there might be no Fs [Bostock on Aristotle] |
9403 | There are three different deductions for actual terms, necessary terms and possible terms [Aristotle] |
11148 | Deduction is when we suppose one thing, and another necessarily follows [Aristotle] |
18896 | Aristotle places terms at opposite ends, joined by a quantified copula [Aristotle, by Sommers] |
3300 | Aristotle's logic is based on the subject/predicate distinction, which leads him to substances and properties [Aristotle, by Benardete,JA] |
11149 | Affirming/denying sentences are universal, particular, or indeterminate [Aristotle] |
8079 | Aristotelian logic has two quantifiers of the subject ('all' and 'some') [Aristotle, by Devlin] |
12756 | Substance is a force for acting and being acted upon [Leibniz] |
14641 | A deduction is necessary if the major (but not the minor) premise is also necessary [Aristotle] |
12755 | Final causes can help with explanations in physics [Leibniz] |
18911 | Linguistic terms form a hierarchy, with higher terms predicable of increasing numbers of things [Aristotle, by Engelbretsen] |
12760 | Something rather like souls (though not intelligent) could be found everywhere [Leibniz] |
19045 | Translation is too flimsy a notion to support theories of cultural incommensurability [Quine] |
12759 | There are atoms of substance, but no atoms of bulk or extension [Leibniz] |
12718 | Secondary matter is active and complete; primary matter is passive and incomplete [Leibniz] |
11854 | If there is some trace of God in things, that would explain their natural force [Leibniz] |
12758 | It is plausible to think substances contain the same immanent force seen in our free will [Leibniz] |
19408 | To say that nature or the one universal substance is God is a pernicious doctrine [Leibniz] |