Once upon a time [Season 3, Episode 6]

Mary Margaret: — I've never lied to her before.
Killian Jones: — You're not lying. You're just keeping a secret until confirmation.
Mary Margaret: — To keep us from the people we really care about.
David Nolan: — And sometimes secrets protect the people we love.

And happy endings always start with hope.

We're the two most powerful practitioners of magic who have ever lived. The Evil Queen and the Dark One joining forces? I'd say we can find another way to handle one smug teenager.

— Having trouble with your fin?
— I'll figure it out!

— You tricked me?
— You went to a long-dead octopus for advice, and you're going to blame me for your problems?

Well, that's one of the perks of being the prince. If I want to dance, I can.