The diary of an eighteenth century French noblewoman, and information relating to her world.
William Wilberforce? (I guessed partially because of quote partially picture)
It's a good guess, Caroline, but the picture is both a clue and a misdirect. The historical figure who said it is also in that movie, but it wasn't Wilberforce.
I've actually never seen the movie, though I know of it. hmmm... I still think it's a political figure. William Pitt?
It's a pretty good movie, in my opinion, you might like it. Your second guess is correct, it was indeed William Pitt.
I've been meaning too watch it, thank you for recommending it!