I should pick up the flower and"-- steadily--"I should keep it, because it was thrown to me by a man who had twice done me the greatest service in his power." Once again he checked, as if by sheer force of will, a sudden eager movement towards her.
"Would you ?" he said quickly.

"Would you do that?
But you would be mistaken; I should be gaining your kindness under false pretences.

The greatest service in my power would be for me to go away and never see you again.

.

.