What is the greatest treasure in the Universe?
It’s your mind. Your brain. Your thoughts.
It’s the You that is you.
If that isn’t making much sense to you, let the late Robert Anton Wilson explain it in a more straight-forward way.
“… the brain produces all that we experience — all our pain and worry, all our bliss states and ecstasies, all our higher evolutionary vistas and trans-time Peak Experiences, etc. It is also ‘the greatest treasure in the universe’ in the most materialistic economic sense: it creates all the ideas which, socially employed, become wealth: roads, scientific laws, calendars, factories, computers, life-saving drugs, medicines, ox-carts, autos, jet planes, spaceships…”