I gazed--and gazed--but little thoughtWhat wealth the show to me had brought: (lines 17-18)
This statement comes as something of a surprise, because it certainly seems as if he is having an epiphany up there in the hills – either that or a hallucination. But now he says that the full realization of his good fortune did not come until later.
They flash upon that inward eye (line 21)
"Inward eye" sounds a lot more spiritual and prophetic than "memory," doesn’t it?