And such too is the grandeur of the dooms
We have imagined for the mighty dead;
All lovely tales that we have heard or read:
An endless fountain of immortal drink,
Pouring unto us from the heaven's brink.
SOURCE: Keats, Endymion, Book I, lines 20-24
What is Keats saying in the last three lines?
Is Keats referring to "tales" of an afterlife / immortality in heaven? If so, why are those "tales" an "endless fountain"? Because there are so many different views on life after death?
Or could he perhaps be saying that "tales that we have read" grant their authors immortality?
And what might be the significance of the aquatic imagery ("fountain", "drink")?