He came to the end of a pass in his half circle around the Doctor, and turned on his heel back.
"Yes. 'No greater love then this - to lay down one's life for a friend', " the Master quoted, meaning it completely, as much as he usually hated platitudes. "All that strength, all the love and compassion you admire in humanity. Everything you want to save. If you take all the power and the choice, decide utterly and completely what is right and wrong - What measure of what you love will you leave them?"