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present themselves to scientific and observational study.
Now to my apprehension, it is only natural
experiential objects that lend themselves to such
a natural classification. I do not think, for
example, that we can make a natural clasification
of plane curves or of any other mere
possibilities. We do classify them, or rather,
divide them, according to their orders and classes
or their so-called deficiencies. But this is a mere
enumeration of the logically possible cases. It embodies
no positive information. It cannot therefore serve
the same purpose as a natural classification.
My notion is that what we call "natural
classification" is, from the nature of things
limited to natural objects. Now the vast majority