"If we want to make sense of the possibility of successful inductive inference, and if we want to explain the possibility of laws of nature, we will need to appeal to something like natural kinds. This is, to be sure, a metaphysical commitment, but it is a metaphysical commitment that is implicit in science, as I see it."

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Mann and Joyce are very different, and yet their fiction often appeals to the same people: Harry Levin taught a famous course on Joyce, Proust, and Mann, and Joseph Campbell singled out Joyce and Mann as special favorites. To see them as offering "possibilities for living", as I do, isn't to identify any distinctive commonality. After all, many great authors would fall under that rubric.

— Philip Kitcher