Personal pronouns belong to the most conservative parts of grammar; that is, they are diachronically fairly stable, as suggested by the fact that in many cases they can be traced back etymologically to or even beyond the earliest stages of reconstructible language history. This is why so far not much progress has been made in unraveling the genesis of personal pronouns: the number of cases where it has been possible to determine their origin is severely limited. Still, some data do exist and allow for the reconstruction of some major lines of grammatical evolution. As we hope to show in this paper, this evolution is the product of a handful of crosslinguistically fairly uniform cognitive and communicative strategies.