The question “who am I” is one of the most fundamental questions we can ask ourselves. What does “I” mean and what is the origin of my unique character? Why does each human being, yes, each cosmic being, differ from all others in the cosmos? And what potentialities lie within me and all fellow beings? Do we all have some measure of free will, and do we determine our own future? The great philosophers gave us the motto: "Man, know thyself." What wisdom is behind this?