Pennsylvania is home to some of the hardest-working, toughest, most decent people in America.

- Bob Casey, Jr.

Boxing is the toughest and loneliest sport in the world.

- Frank Bruno

Going back down to the minors is the toughest thing to handle in baseball.

- Gaylord Perry

The toughest thing about success is that you've got to keep on being a success.

- Irving Berlin

Remember Tupperware? That was the toughest stuff ever. Why can't they make a phone out of Tupperware?

- J. B. Smoove

My toughest fight was with my first wife.

- Muhammad Ali

Seeing the world differently is one of the toughest incompatibilities to reconcile in a relationship.

- Mariella Frostrup

I think the toughest thing about being an actor in a film is to be with a director who doesn't know what they want. And that can be really, really frustrating.

- Ricky Jay

All I ever cared about was actors - toughest job in this business.

- Seymour Cassel