Zen is very simple… What are you?

In this whole world, everyone searches for happiness outside, but nobody understands their true self inside. Everybody says, “I” — “I want this, I am like that…” But nobody understands this “I.” Before you were born, where did your I come from? When you die, where will your I go? If you sincerely ask, “What am I?” sooner or later you will run into a wall where all thinking is cut off. We call this “Don’t know.”

Zen is keeping this “Don’t know” mind always and everywhere.