Japanese for Westerwalder
The Buddhist monk Frederik is invited to Selma and Luise's house. The villagers in the film question him a few things. Elsbeth asks him to say something in Japanese, whereupon he quotes the following saying:
海に千年・山に千年 Umi ni sennen, yama ni sennen
"A thousand years in the sea, a thousand years in the mountains" comes from the Chinese legend of a snake that lived for a thousand years in the sea and a thousand years in the mountains and eventually became a dragon.
Metaphorically, this means that people who have lived many years and have a lot of experience can use this experience to become wiser and to understand the world well.