Who am I?

The great masters tell us that the most important question in the world is: “Who am I?” Or rather: “What is ‘I’?” What is this thing I call “I”? What is this thing I call self? You mean you understood everything else in the world and you didn’t understand this? You mean you understood astronomy and black holes and quasars and you picked up computer science, and you don’t know who you are? My, you…