Far from being optional, as far as I remember you have to learn the lizardman language to ultimately finish the game. There is a method to learning it that we'll discover in this video but the effort of achieving what we need to is a long and patient process.
We will persevere though, while we're here there's no reason to overlook this quest.
![](https://i.ytimg.com/vi/_ZO_eUn6K3g/maxresdefault.jpg)