Who is the third who walks always beside you?
When I count, there are only you and I together
But when I look ahead up the white road
There is always another one walking beside you
Gliding wrapt in a brown mantle, hooded
I do not know whether a man or a woman
—But who is that on the other side of you?

And it came to pass, as he sat at meat with them, he took bread, and blessed it, and brake, and gave to them. And their eyes were opened, and they knew him; and he vanished out of their sight.

The "treasure hard to attain" lies hidden in the ocean of the unconscious, and only the brave can reach it. I conjecture that the treasure is also the "companion," the one who goes through life at our side - in all probability a close analogy to the lonely ego who finds a mate in the self, for at first the self is the strange non-ego. This is the theme of the magical traveling companion, of whom I will give three famous examples: the disciples on the road to Emmaus, Krishna, and Arjuna in the Bhagavad Gita, Moses and El-Khidr in Sura 18 of the Koran.

You
Me
Another?

You me our otherness
Traveling together
Arriving apart

You
Me
More?