12 ideas
18270 | Choice suggests that intensions are not needed to ensure classes [Coffa] |
Full Idea: The axiom of choice was an assumption that implicitly questioned the necessity of intensions to guarantee the presence of classes. | |
From: J. Alberto Coffa (The Semantic Tradition from Kant to Carnap [1991], 7 'Log') | |
A reaction: The point is that Choice just picks out members for no particular reason. So classes, it seems, don't need a reason to exist. |
18263 | The semantic tradition aimed to explain the a priori semantically, not by Kantian intuition [Coffa] |
Full Idea: The semantic tradition's problem was the a priori; its enemy, Kantian pure intuition; its purpose, to develop a conception of the a priori in which pure intuition played no role; its strategy, to base that theory on a development of semantics. | |
From: J. Alberto Coffa (The Semantic Tradition from Kant to Carnap [1991], 2 Intro) | |
A reaction: It seems to me that intuition, in the modern sense, has been unnecessarily demonised. I would define it as 'rational insights which cannot be fully articulated'. Sherlock Holmes embodies it. |
18272 | Platonism defines the a priori in a way that makes it unknowable [Coffa] |
Full Idea: The trouble with Platonism had always been its inability to define a priori knowledge in a way that made it possible for human beings to have it. | |
From: J. Alberto Coffa (The Semantic Tradition from Kant to Carnap [1991], 7 'What') | |
A reaction: This is the famous argument of Benacerraf 1973. |
18266 | Mathematics generalises by using variables [Coffa] |
Full Idea: The instrument of generality in mathematics is the variable. | |
From: J. Alberto Coffa (The Semantic Tradition from Kant to Carnap [1991], 4 'The conc') | |
A reaction: I like the idea that there are variables in ordinary speech, pronouns being the most obvious example. 'Cats' is a variable involving quantification over a domain of lovable fluffy mammals. |
7257 | All modern social systems seem to be conspiracies of the rich [More,T] |
Full Idea: When I consider any social system that prevails in the modern world, I can't see it as anything but a conspiracy of the rich to advance their own interests under the pretext of organizing society. | |
From: Thomas More (Utopia [1516], Bk 2) | |
A reaction: I'm afraid this is my own view of most conservative politics. I don't deny that there is a good case to be made for the conservative view (by Burke and Scruton, for example), but the rich will always latch onto its coat-tails. Cf. Idea 122. |
7254 | If you try to get elected, you should be permanently barred from seeking office [More,T] |
Full Idea: In Utopia, anyone who deliberately tries to get himself elected to a public office is permanently disqualified from holding one. | |
From: Thomas More (Utopia [1516], Bk 2) | |
A reaction: This echoes a thought found in Plato (Idea 2149). I've always liked this idea. Why can't we have elections were a group of the best people are invited to stand? Well, yes, it would lead to corruption... Still, the best should be pushed to the front. |
7255 | Only Utopians fail to see glory in warfare [More,T] |
Full Idea: Utopians are practically the only people on earth who fail to see anything glorious in war. | |
From: Thomas More (Utopia [1516], Bk 2) | |
A reaction: A refreshing thought for such an early date. Whatever dubious behaviour is nowadays attributed to Thomas More, you have to admire someone who writes this during the reign of Henry VIII. |
7253 | In Utopia, legal euthanasia is considered honourable [More,T] |
Full Idea: In Utopia, officially sanctioned euthanasia is regarded as an honourable death. | |
From: Thomas More (Utopia [1516], Bk 2) | |
A reaction: A bit surprising coming from a writer who is now a Catholic martyr and saint. |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
Full Idea: Archelaus was the first person to say that the universe is boundless. | |
From: report of Archelaus (fragments/reports [c.450 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 02.Ar.3 |
18279 | Relativity is as absolutist about space-time as Newton was about space [Coffa] |
Full Idea: If the theory of relativity might be thought to support an idealist construal of space and time, it is no less absolutistic about space-time than Newton's theory was about space. | |
From: J. Alberto Coffa (The Semantic Tradition from Kant to Carnap [1991]) | |
A reaction: [He cites Minkowski, Weyl and Cartan for this conclusion] Coffa is clearly a bit cross about philosophers who draw naive idealist and relativist conclusions from relativity. |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |
Full Idea: Archelaus wrote that life on Earth began in a primeval slime. | |
From: report of Archelaus (fragments/reports [c.450 BCE]) by Malcolm Schofield - Archelaus | |
A reaction: This sounds like a fairly clearcut assertion of the production of life by evolution. Darwin's contribution was to propose the mechanism for achieving it. We should honour the name of Archelaus for this idea. |
7256 | In Utopia, the Supreme Being is identical with Nature [More,T] |
Full Idea: Everyone in Utopia agrees that the Supreme Being (which they call Mythras) is identical with Nature. | |
From: Thomas More (Utopia [1516], Bk 2) | |
A reaction: This sounds remarkably like full-blown Spinozean pantheism, though it should be interpreted with caution. It certainly seems to show that pantheism was a possibility in the minds of late medieval religious thinkers. |