123 ideas
224 | When questions are doubtful we should concentrate not on objects but on ideas of the intellect [Plato] |
232 | Opposites are as unlike as possible [Plato] |
8937 | Plato's 'Parmenides' is the greatest artistic achievement of the ancient dialectic [Hegel on Plato] |
14684 | A world is 'accessible' to another iff the first is possible according to the second [Salmon,N] |
14669 | For metaphysics, T may be the only correct system of modal logic [Salmon,N] |
14667 | System B has not been justified as fallacy-free for reasoning on what might have been [Salmon,N] |
14668 | In B it seems logically possible to have both p true and p is necessarily possibly false [Salmon,N] |
14692 | System B implies that possibly-being-realized is an essential property of the world [Salmon,N] |
14671 | What is necessary is not always necessarily necessary, so S4 is fallacious [Salmon,N] |
14686 | S5 modal logic ignores accessibility altogether [Salmon,N] |
14691 | S5 believers say that-things-might-have-been-that-way is essential to ways things might have been [Salmon,N] |
14693 | The unsatisfactory counterpart-theory allows the retention of S5 [Salmon,N] |
14670 | Metaphysical (alethic) modal logic concerns simple necessity and possibility (not physical, epistemic..) [Salmon,N] |
3137 | Varieties of singular terms are used to designate token particulars [Rey] |
13986 | Plato found antinomies in ideas, Kant in space and time, and Bradley in relations [Plato, by Ryle] |
14150 | Plato's 'Parmenides' is perhaps the best collection of antinomies ever made [Russell on Plato] |
16150 | One is, so numbers exist, so endless numbers exist, and each one must partake of being [Plato] |
3143 | Physics requires the existence of properties, and also the abstract objects of arithmetic [Rey] |
229 | The one was and is and will be and was becoming and is becoming and will become [Plato] |
21821 | Plato's Parmenides has a three-part theory, of Primal One, a One-Many, and a One-and-Many [Plato, by Plotinus] |
221 | Absolute ideas, such as the Good and the Beautiful, cannot be known by us [Plato] |
223 | If you deny that each thing always stays the same, you destroy the possibility of discussion [Plato] |
227 | You must always mean the same thing when you utter the same name [Plato] |
210 | It would be absurd to think there were abstract Forms for vile things like hair, mud and dirt [Plato] |
220 | The concept of a master includes the concept of a slave [Plato] |
211 | If admirable things have Forms, maybe everything else does as well [Plato] |
219 | If absolute ideas existed in us, they would cease to be absolute [Plato] |
228 | Greatness and smallness must exist, to be opposed to one another, and come into being in things [Plato] |
16151 | Plato moves from Forms to a theory of genera and principles in his later work [Plato, by Frede,M] |
218 | Participation is not by means of similarity, so we are looking for some other method of participation [Plato] |
213 | Each idea is in all its participants at once, just as daytime is a unity but in many separate places at once [Plato] |
216 | If things are made alike by participating in something, that thing will be the absolute idea [Plato] |
215 | If things partake of ideas, this implies either that everything thinks, or that everything actually is thought [Plato] |
212 | The whole idea of each Form must be found in each thing which participates in it [Plato] |
217 | Nothing can be like an absolute idea, because a third idea intervenes to make them alike (leading to a regress) [Plato] |
214 | If absolute greatness and great things are seen as the same, another thing appears which makes them seem great [Plato] |
15851 | Parts must belong to a created thing with a distinct form [Plato] |
15846 | In Parmenides, if composition is identity, a whole is nothing more than its parts [Plato, by Harte,V] |
15849 | Plato says only a one has parts, and a many does not [Plato, by Harte,V] |
15850 | Anything which has parts must be one thing, and parts are of a one, not of a many [Plato] |
13259 | It seems that the One must be composed of parts, which contradicts its being one [Plato] |
14678 | Any property is attached to anything in some possible world, so I am a radical anti-essentialist [Salmon,N] |
15847 | Two things relate either as same or different, or part of a whole, or the whole of the part [Plato] |
3145 | The Indiscernibility of Identicals is a truism; but the Identity of Indiscernibles depends on possible identical worlds [Rey] |
14680 | Logical possibility contains metaphysical possibility, which contains nomological possibility [Salmon,N] |
14690 | In the S5 account, nested modalities may be unseen, but they are still there [Salmon,N] |
14677 | Metaphysical necessity is said to be unrestricted necessity, true in every world whatsoever [Salmon,N] |
14679 | Bizarre identities are logically but not metaphysically possible, so metaphysical modality is restricted [Salmon,N] |
14688 | Without impossible worlds, the unrestricted modality that is metaphysical has S5 logic [Salmon,N] |
14685 | Metaphysical necessity is NOT truth in all (unrestricted) worlds; necessity comes first, and is restricted [Salmon,N] |
14681 | Logical necessity is free of constraints, and may accommodate all of S5 logic [Salmon,N] |
14676 | Nomological necessity is expressed with intransitive relations in modal semantics [Salmon,N] |
14689 | Necessity and possibility are not just necessity and possibility according to the actual world [Salmon,N] |
14674 | Impossible worlds are also ways for things to be [Salmon,N] |
14682 | Denial of impossible worlds involves two different confusions [Salmon,N] |
14687 | Without impossible worlds, how things might have been is the only way for things to be [Salmon,N] |
14683 | Possible worlds rely on what might have been, so they can' be used to define or analyse modality [Salmon,N] |
14672 | Possible worlds are maximal abstract ways that things might have been [Salmon,N] |
14675 | Possible worlds just have to be 'maximal', but they don't have to be consistent [Salmon,N] |
14673 | You can't define worlds as sets of propositions, and then define propositions using worlds [Salmon,N] |
3172 | Empiricism says experience is both origin and justification of all knowledge [Rey] |
3166 | Animal learning is separate from their behaviour [Rey] |
3232 | Abduction could have true data and a false conclusion, and may include data not originally mentioned [Rey] |
3128 | It's not at all clear that explanation needs to stop anywhere [Rey] |
3136 | The three theories are reduction, dualism, eliminativism [Rey] |
3141 | Is consciousness 40Hz oscillations in layers 5 and 6 of the visual cortex? [Rey] |
3148 | Dualist privacy is seen as too deep for even telepathy to reach [Rey] |
3164 | Intentional explanations are always circular [Rey] |
3138 | Arithmetic and unconscious attitudes have no qualia [Rey] |
3142 | Why qualia, and why this particular quale? [Rey] |
3224 | If qualia have no function, their attachment to thoughts is accidental [Rey] |
3227 | Are qualia a type of propositional attitude? [Rey] |
3226 | Are qualia irrelevant to explaining the mind? [Rey] |
3229 | If colour fits a cone mapping hue, brightness and saturation, rotating the cone could give spectrum inversion [Rey] |
3223 | Self-consciousness may just be nested intentionality [Rey] |
3162 | Experiments prove that people are often unaware of their motives [Rey] |
3163 | Brain damage makes the unreliability of introspection obvious [Rey] |
3195 | If reason could be explained in computational terms, there would be no need for the concept of 'free will' [Rey] |
3196 | Free will isn't evidence against a theory of thought if there is no evidence for free will [Rey] |
3180 | Maybe behaviourists should define mental states as a group [Rey] |
3165 | Behaviourism is eliminative, or reductionist, or methodological [Rey] |
3167 | Animals don't just respond to stimuli, they experiment [Rey] |
3173 | How are stimuli and responses 'similar'? [Rey] |
3179 | Behaviour is too contingent and irrelevant to be the mind [Rey] |
3186 | If a normal person lacked a brain, would you say they had no mind? [Rey] |
3127 | Dualism and physicalism explain nothing, and don't suggest any research [Rey] |
3188 | Homuncular functionalism (e.g. Freud) could be based on simpler mechanical processes [Rey] |
3216 | Is the room functionally the same as a Chinese speaker? [Rey] |
3220 | Searle is guilty of the fallacy of division - attributing a property of the whole to a part [Rey] |
3206 | One computer program could either play chess or fight a war [Rey] |
3140 | If you explain water as H2O, you have reduced water, but not eliminated it [Rey] |
3134 | Human behaviour can show law-like regularity, which eliminativism can't explain [Rey] |
3200 | Pattern recognition is puzzling for computation, but makes sense for connectionism [Rey] |
3201 | Connectionism explains well speed of perception and 'graceful degradation' [Rey] |
3202 | Connectionism explains irrationality (such as the Gamblers' Fallacy) quite well [Rey] |
3199 | Connectionism assigns numbers to nodes and branches, and plots the outcomes [Rey] |
3150 | Can identity explain reason, free will, non-extension, intentionality, subjectivity, experience? [Rey] |
3129 | Physicalism offers something called "complexity" instead of mental substance [Rey] |
3139 | Some attitudes are information (belief), others motivate (hatred) [Rey] |
3171 | Children speak 90% good grammar [Rey] |
3174 | Good grammar can't come simply from stimuli [Rey] |
3213 | Animals may also use a language of thought [Rey] |
3170 | We train children in truth, not in grammar [Rey] |
3215 | Images can't replace computation, as they need it [Rey] |
3194 | CRTT is good on deduction, but not so hot on induction, abduction and practical reason [Rey] |
3147 | Problem-solving clearly involves manipulating images [Rey] |
3175 | Animals map things over time as well as over space [Rey] |
3207 | Simple externalism is that the meaning just is the object [Rey] |
3176 | Anything bears a family resemblance to a game, but obviously not anything counts as one [Rey] |
3181 | A one hour gap in time might be indirectly verified, but then almost anything could be [Rey] |
3204 | The meaning of "and" may be its use, but not of "animal" [Rey] |
3205 | Semantic holism means new evidence for a belief changes the belief, and we can't agree on concepts [Rey] |
3209 | Causal theories of reference (by 'dubbing') don't eliminate meanings in the heads of dubbers [Rey] |
3210 | If meaning and reference are based on causation, then virtually everything has meaning [Rey] |
3149 | Referential Opacity says truth is lost when you substitute one referring term ('mother') for another ('Jocasta') [Rey] |
3169 | A simple chaining device can't build sentences containing 'either..or', or 'if..then' [Rey] |
3221 | Our desires become important when we have desires about desires [Rey] |
222 | Only a great person can understand the essence of things, and an even greater person can teach it [Plato] |
225 | The unlimited has no shape and is endless [Plato] |
233 | Some things do not partake of the One [Plato] |
2062 | The only movement possible for the One is in space or in alteration [Plato] |
231 | Everything partakes of the One in some way [Plato] |
234 | We couldn't discuss the non-existence of the One without knowledge of it [Plato] |