Rule 1: The Doctor lies.

“The Doctor: Doctor Song, you've got that face on again.River: What face?The Doc…”

“The Doctor: Just had a fall. All the way down there, right to the library. Heck…”

“All lives end. All hearts are broken. Caring is not an advantage.”

“Madame Kovarian: The anger of a good man is not a problem. Good men have too ma…”