My toughest fight was with my first wife. Muhammad Ali
Boxing is the toughest and loneliest sport in the world. Frank Bruno
The toughest thing about success is that you've got to keep on being a success. Irving Berlin
As athletes, we're used to reacting quickly. Here, it's 'come, stop, come, stop.' There's a lot of downtime. That's the toughest part of the day. Michael Jordan
Toughest job I ever had: selling doors, door to door. Bill Bailey
A woman's tongue is sharp enough to pierce the toughest flesh. Togolese Proverb