"What" and "if" are two words as non-threatening as words can be. But put them together side-by-side and they have the power to haunt you for the rest of your life: What if? What if? What if?
Vanessa Redgrave - Claire

“I've dragged myself through the blood and sand of a thousand arenas. In the end there's only one thing I regret - I never learned to read or write. I was obliged to renounce education... but I make the whole world responsible for my ignorance.”

John Carradine - El Nacional

“We both know you belong with Victor. You're part of his work, the thing that keeps him going. If that plane leaves the ground and you're not with him, you'll regret it. Maybe not today. Maybe not tomorrow, but soon and for the rest of your life.”

Humphrey Bogart - Rick Blaine

“My only regret is that I have but one wife to give to my country.”
Robert Charles Benchley - Mr. Osborne

“Because I am mad, I have betrayed you. And because I'm mad, I'm rejoicing in my heart, without a shred of pity, without a shred of regret, watching you go with glory in my heart!”

Ingrid Bergman - Paula Alquist