Tell the Cure, and make it a point of honour for his secret to be kept?
But once told, the new life would no longer stand by itself as the new life, cut off from all contact with the past.

Its success, its possibility, must lie in its absolute separateness, with obscurity behind--as though he had come out of nothing into this very room, on that winter morning when memory returned.
It was clear that he must, somehow, evade the issue.

He glanced at Jo, whose eyes, strained and painful, were fixed upon the door.

Here was a man who suffered for his sake....

He took a step forward, as though with sudden resolve, but there came a knocking, and, pausing, he motioned Jo to open the door.