It's a good place to root it. Have a look at:

It's a good place to root it. Have a look at:
[1]https://en.wikipedia.org/wiki/Gemistus_Pletho and his
connection to Byzantium for without him as well as the Eastern
Orthodox monk that wanted him to come (who said "no" to
Purgatory and the Latin Pope) and the otherwise failed Council
of Florence, the Byzantine education would not likely have made
it to the West before the fall of Byzantium, spawning the
translations that spawned the schools that led to the
Renaissance humanistic movement. Quite an amazing chain of
events. It's unfortunate that Gemistus Pletho often doesn't get
the mention he deserves in our received cultural narrative. The
way our narrative tends to read, humanism appears to almost be a
natural consequence, as if some kind of inevitable progress, a
holdover from older 19th century narratives which had strange
tales of ages Dark and Middle, some of which are still being
taught today, improperly so.

References

Visible links
1. https://l.facebook.com/l.php?u=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FGemistus_Pletho&h=eAQGQB9Te