ry grammar. A language that uses tenses 
incorporates an ontology of time into its grammar. Indoeuropean 
languages seem to have an ontology of 'events' built into their 
grammar ( I use scare quotes since the category is rather looser than 
physical event.) There *is* an ontological viewpoint which informs 
English (arguably, informs all Indoeuropean langauges: hence the 
earlier interest in Sanskrit, by the way.) I suspect there is one 
(perhaps several?) that underlies every library classification scheme