1.What is actually reality? What is really real?
2.What is the world around us? (is physical, spiritual, in our heads, etc.)
3. What are we? What is a human being? What is our purpose, or is there even a purpose at all?
4. What happens when we die?
5. is it possible to know anything at all, and why?
6. How do we know what is right and wrong?
7. What is the meaning of human history? What is its purpose?