There is a rich literature about the temporal conjunctions before/after, but at the time I gave the talk that underlies this paper I was not aware of any analysis of the temporal comparatives früher/später ‘earlier/later’, which may be used to express similar states of affairs, but are constructed differently.2 Recently I became acquainted with del Prete’s thesis about It. prima/dopo, which analyses prima as a comparative and dopo as a preposition.3 This is the only paper known to me that goes into the same direction as the following proposal. Del Prete’s analysis is very different from mine and I must leave the discussion of his theory to another occasion.