Can it be, that human characters do not automatically know their own native language?

[James Jacobs]

Ravingdork wrote:

What about goblin PCs? According to the Bestiary, they can only speak Goblin.

If you're playing a goblin, chances are VERY good that you want to play an underdog character, first of all, so only speaking Goblin is fine.

And if you're playing a goblin, you're not playing a core race, so your GM needs to do a little bit of extra lifting to make his campaign work anyway. Deciding on whether or not the goblin PC gets to speak Common or not is part of his job.

[Russ Taylor]

James Jacobs wrote:

In the revised Campaign Setting hardcover, all PCs are assumed to speak Common. They gain a free bonus language based on their ethnicity as well, so a Varisian will begin play speaking Common and Varisian, and an Ulfen will begin play speaking Common and Skald. This does mean that some ethnicities will get only one language—Taldans start with Common and that's about it. Same goes for Chelaxians.

Fantastic. Glad the Campaign Setting came around to this idea. :)