I hated every minute of training, but I said, 'Don't quit. S... - Muhammad Ali

"I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.'"

"You lose nothing when fighting for a cause ... In my mind the losers are those who don't have a cause they care about."

"Friendship is the hardest thing in the world to explain. It's not something you learn in school. But if you haven't learned the meaning of friendship, you really haven't learned anything."

"Ali's got a left, Ali's got a right - when he knocks you down, you'll sleep for the night; and when you lie on the floor and the ref counts to ten, hope and pray that you never meet me again."

"He who is not courageous enough to take risks will accomplish nothing in life."