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Recent Work

The Aristotelian doctrine of four causes naturally arises from the combination of the two distinctions (a) between things and changes, and (b) between that which potentially is a certain thing or change and what it potentially is.
The biological species concept rests on the notion of reproduction, which we can only apply if we know what counts as a result of successful reproduction. Therefore, it presupposes the typological species concept and cannot, as Ernst Mayr thinks, replace it.
Descartes uses 'conscientia' in the traditional sense, roughly meaning 'moral conscience'.
 


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