The question of "Who am I?" may be one of them. The first thing you should ask when thinking about your existence is whether you are qualified to ask such a question. Make sure that there is nothing you can't see in the blind spot though it looks clear to others. From "Beyond Good and Evil" by the German philosopher (translated by Michio Takeyama).
"December 1 2019
from “Oriori no Kotoba” by Kiyokazu Washida, The Asahi Shimbun"