'Adam Smith is no doubt right, when he says that the first individual cave which is called cave, gave the name to all other caves; ... and the history of almost every substantive might be cited in support of his view. But Leibnitz is equally right when, in looking beyond the first emergence of such names as cave, town, or palace, he asks how such names could have arisen. Let us take the Latin names of cave. A cave in Latin is called _antrum_, _cavea_, _spelunca_. Now _antrum_ means really the same as _internum_. Antar, in Sanskrit means _between_ or _within_. _Antrum_, therefore, meant originally what is within or inside the earth or anything else. It is clear, therefore, that such a name could not have been given to any individual cave, unless the general idea of being within, or inwardness, had been present in the mind. This general idea once formed, and once expressed by the pronominal root _an_ or _antar_, the process of naming is clear and intelligible. The place where the savage could live safe from rain and from the sudden attacks of wild beasts, a natural hollow in the rock, he would call his _within_, his _antrum_; and afterward similar places, whether dug in the earth or cut in a tree, would be designated by the same name ... Let us take another word for cave, which is _cavea_ or _caverna_. Here again Adam Smith would be perfectly right in maintaining that this name, when first given, was applied to one particular cave, and was afterward extended to other caves. But Leibnitz would be equally right in maintaining that in order to call even the first hollow _cavea_, it was necessary that the general idea of hollow should have been formed in the mind, and should have received its vocal expression _cav_ ... _'The first thing really known is the general. It is through it that we know and name afterward individual objects of which any general idea can be predicated, and it is only in the third stage that these individual objects, thus known and named, become again the representatives of whole classes, and their names or proper names are raised into appellatives.'_ The italics in the last paragraph are my own.