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All the ideas for 'Classical Cosmology (frags)', 'De modo distinguendi phaenomena' and 'Essays on Intellectual Powers 4: Conception'

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8 ideas

7. Existence / D. Theories of Reality / 2. Realism

12741	If experience is just a dream, it is still real enough if critical reason is never deceived [Leibniz]
	Full Idea: Even if this whole life were said to be only a dream, and the visible world only a phantasm, I should call this dream or phantasm real enough if we were never deceived by it when we make good use of reason.
	From: Gottfried Leibniz (De modo distinguendi phaenomena [1685], A6.4.1502), quoted by Daniel Garber - Leibniz:Body,Substance,Monad 7
	A reaction: I find this response more satisfactory than his response in Idea 12740. As a supporter of the coherence account of justification, I take the closest we get to knowledge to be when our full critical faculties and experience are brought to bear, and shared.

12740	The strongest criterion that phenomena show reality is success in prediction [Leibniz]
	Full Idea: The most powerful criterion of the reality of phenomena, sufficient even by itself, is success in predicting future phenomena from past and present ones.
	From: Gottfried Leibniz (De modo distinguendi phaenomena [1685], A6.4.1502), quoted by Daniel Garber - Leibniz:Body,Substance,Monad 7
	A reaction: I would say that this is clutching at straws, as there is no reason at all to deny that dreams could be thoroughly coherent and predictable in their events. We must just live with these doubts, not try to defeat them.

9. Objects / D. Essence of Objects / 4. Essence as Definition

23647	Objects have an essential constitution, producing its qualities, which we are too ignorant to define [Reid]
	Full Idea: Individuals and objects have a real essence, or constitution of nature, from which all their qualities flow: but this essence our faculties do not comprehend. They are therefore incapable of definition.
	From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1)
	A reaction: Aha - he's one of us! I prefer the phrase 'essential nature' of an object, which is understood, I think, by everyone. I especially like the last bit, directed at those who mistakenly think that Aristotle identified the essence with the definition.

10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / b. Conceivable but impossible

11958	Impossibilites are easily conceived in mathematics and geometry [Reid, by Molnar]
	Full Idea: Reid pointed out how easily conceivable mathematical and geometric impossibilities are.
	From: report of Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], IV.III) by George Molnar - Powers 11.3
	A reaction: The defence would be that you have to really really conceive them, and the only way the impossible can be conceived is by blurring it at the crucial point, or by claiming to conceive more than you actually can

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / e. Primary/secondary critique

12721	Light, heat and colour are apparent qualities, and so are motion, figure and extension [Leibniz]
	Full Idea: Concerning bodies I can demonstrate that not merely light, heat, color, and similar qualities are apparent but also motion, figure, and extension.
	From: Gottfried Leibniz (De modo distinguendi phaenomena [1685], A6.4.1504), quoted by Daniel Garber - Leibniz:Body,Substance,Monad 4
	A reaction: Leibniz is not consistent on this. Here he is flirting with idealism, but he often backs away from that. In Discourse §12 he makes secondary qualities certainly subjective, and primary qualities possibly so. He admits the primaries contain eternal truths.

19. Language / B. Reference / 1. Reference theories

23646	Reference is by name, or a term-plus-circumstance, or ostensively, or by description [Reid]
	Full Idea: An individual is expressed by a proper name, or by a general word joined to distinguishing circumstances; if unknown, it may be pointed out to the senses; when beyond the reach of the senses it may be picked out by an imperfect but true description.
	From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1)
	A reaction: [compressed] If Putnam, Kripke and Donnellan had read this paragraph they could have save themselves a lot of work! I take reference to be the activity of speakers and writers, and these are the main tools of the trade.

19. Language / B. Reference / 3. Direct Reference / c. Social reference

23645	A word's meaning is the thing conceived, as fixed by linguistic experts [Reid]
	Full Idea: The meaning of a word (such as 'felony') is the thing conceived; and that meaning is the conception affixed to it by those who best understand the language.
	From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1)
	A reaction: He means legal experts. This is precisely that same as Putnam's account of the meaning of 'elm tree'. His discussion here of reference is the earliest I have encountered, and it is good common sense (for which Reid is famous).

27. Natural Reality / E. Cosmology / 1. Cosmology

5994	Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG]
	Full Idea: The four major disputes in classical cosmology were whether the cosmos is 'open' or 'closed', whether it is explained mechanistically or teleologically, whether it is alive or mere matter, and whether or not it has a beginning.
	From: report of T.M. Robinson (Classical Cosmology (frags) [1997]) by PG - Db (ideas)
	A reaction: A nice summary. The standard modern view is closed, mechanistic, inanimate and non-eternal. But philosophers can ask deeper questions than physicists, and I say we are entitled to speculate when the evidence runs out.