“Looking back is a bad habit.”
John Wayne - Rooster Cogburn

“- Ariadne: These aren't just dreams. These are memories. And you said never to use memories.
- Cobb: I know I did.
- Ariadne: You're trying to keep her alive. You can't let her go.
- Cobb: You don't understand. These are moments I regret, the memories that I have to change.”
Ellen Page - Ariadne
Leonardo DiCaprio - Cobb

“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