Every once in a while, I come across a person's work that I didn't appreciate the first time I encountered it.
As an example, I stumbled across some of George Carlin's comedy routines on YouTube. Back in his heyday, I might have written-off his routines as "old man shouts at cloud."
Today, I realize his musings about society were spot-on amazing.

Another example would be the writings of Dr Seuss.

Does anyone have an example, in their opinion?