Before the thread gets completely hijacked …
eelpis:
Your fascinating thread title drew me in to read your topic. Now you’ve got me curious.
I would be very interested to hear how in your estimation St Joseph Benedict Labre, St Francis, St Mary Magdalen de’Pazzi, and St John Mary Vianney walked the fine line between sanctity and folly?
bpbasilphx piqued my interest enough to look up more info on St. Simeon the Stylite, whom I had heard about but must have forgotten … For any in this conversation as confuzzled as me,

what St. Simeon the Stylite “started to descend” was a pillar. He ended up living atop the pillar for 37 years, if Wikipedia can be believed. (Not the best reference but hey, it was the first website to come up in a Google search.)
As for Blessed Damien of Molokai, it’s easy (understatement of the century) to see how his heroic decision to voluntarily live and serve the sick in a leper colony, even though this eventually led to his death, could be viewed as folly by the world.
Pope John Paul II said about Blessed Damien:
“Holiness is not perfection according to human criteria; it is not reserved for a small number of exceptional persons. It is for everyone; it is the Lord who brings us to holiness, when we are willing to collaborate in the salvation of the world for the glory of God, despite our sin and our sometimes rebellious temperament.”
americancatholic.org/Features/SaintOfDay/default.asp?id=1379
There’s the old expression, “the folly of the Cross,” which brings to mind a relevant … and beautiful … Bible verse on sacrificial love:
“Greater love than this no man hath, that a man lay down his life for his friends.” – John 15:13
~~ the phoenix