In the following sentence:
I think the sentence means:
He says: "People go higher, water flows into lower. I don't feel satisfied, have not seen everything yet. I want to see everything, ..."
But I don't understand the last part. Judged by the context, it might be something like the following:
These could be experienced only once in the next life (...?)
Especially I don't understand what 白 means here. It might be "clear" (verb), but then the meaning would be:
These could not be clear once in the next life (...?)
So what does it mean?