Combining Texts

All the ideas for 'Natural Kinds and Biological Realism', 'The Truth in Relativism' and 'Political Liberalism'

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6 ideas

22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / f. Ethical non-cognitivism

22450	If moral systems can't judge other moral systems, then moral relativism is true [Williams,B, by Foot]
	Full Idea: If some societies with divergent moral systems merely confront each other, having no use for the assertion that their own systems are true and the others false except to mark the system to which they adhere, then relativism is a true theory of morality.
	From: report of Bernard Williams (The Truth in Relativism [1974]) by Philippa Foot - Moral Relativism p.3
	A reaction: 'Having no use for' an assertion is not the same as the assertion being impossible. Some liberal cultures refuse to criticise others because their highest value is tolerance, even when the target culture wholly contradicts the critics' other values.

23. Ethics / D. Deontological Ethics / 3. Universalisability

21051	Check your rationality by thinking of your opinion pronounced by the supreme court [Rawls]
	Full Idea: To check whether we are following public reason we might ask: how would our argument strike us presented in the form of a supreme court opinion?
	From: John Rawls (Political Liberalism [1993], p.254), quoted by Michael J. Sandel - Justice: What's the right thing to do? 10
	A reaction: A very nice practical implementation of Kantian universalisability. How would your opinion sound if it were written into a constitution?

24. Political Theory / B. Nature of a State / 2. State Legitimacy / c. Social contract

21119	Power is only legitimate if it is reasonable for free equal citizens to endorse the constitution [Rawls]
	Full Idea: Exercise of political power is fully proper only when it is exercised in accordance with a constitution the essentials of which all citizens as free and equal may reasonably be expected to endorse in light of principles and ideals acceptable to reason.
	From: John Rawls (Political Liberalism [1993], p.217), quoted by Andrew Shorten - Contemporary Political Theory 02
	A reaction: This is not the actual endorsement of Rousseau, or the tacit endorsement of Locke (by living there), but adds a Kantian appeal to a rational consensus, on which rational people should converge. Very Enlightenment. 'Hypothetical consent'.

26. Natural Theory / B. Natural Kinds / 1. Natural Kinds

17371	Some kinds are very explanatory, but others less so, and some not at all [Devitt]
	Full Idea: Explanatory significance, hence naturalness, comes in degrees: positing some kinds may be very explanatory, positing others, only a little bit explanatory, positing others still, not explanatory at all.
	From: Michael Devitt (Natural Kinds and Biological Realism [2009], 4)
	A reaction: He mentions 'cousin' as a natural kind that is not very explanatory of anything. It interests us as humans, but not at all in other animals, it seems. ...Nice thought, though, that two squirrels might be cousins...

27. Natural Reality / G. Biology / 5. Species

17372	The higher categories are not natural kinds, so the Linnaean hierarchy should be given up [Devitt]
	Full Idea: The signs are that the higher categories are not natural kinds and so the Linnaean hierarchy must be abandoned. ...This is not abandoning a hierarchy altogether, it is not abandoning a tree of life.
	From: Michael Devitt (Natural Kinds and Biological Realism [2009], 6)
	A reaction: Devitt's underlying point is that the higher and more general kinds do not have an essence (a specific nature), which is the qualification to be a natural kind. They explain nothing. Essence is the hallmark of natural kinds. Hmmm.

17373	Species pluralism says there are several good accounts of what a species is [Devitt]
	Full Idea: Species pluralism is the view that there are several equally good accounts of what it is to be a species.
	From: Michael Devitt (Natural Kinds and Biological Realism [2009], 7)
	A reaction: Devitt votes for it, and cites Dupré, among many other. Given the existence of rival accounts, all making good points, it is hard to resist this view.