Letter of October 21, 1926 (translated by Amy Mims; "Nikos Kazantzakis, A Biography" by Helen Kazantzakis, 1968)
"Corfu marvelous-but only for a short time. The mountains, the sea, the colours all exquisite, but pathetic, amolissants (devitalizing), soporific, fatal to any fighting soul".
I know what he meant about the island being devitalising and soporific- especially in the heat of August.
Kazantzakis had the Corfu blues.