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TUD remembers the G.O.A.T.

1. The 15 Most Iconic Muhammad Ali Quotes

Soon To Be Champion Source:Getty

“I’m not conceited, I’m just convinced. I’m so modest, I can admit my own faults and my only fault is I don’t realize how great I really am.”

2. The 15 Most Iconic Muhammad Ali Quotes

Cassius Clay... Source:Getty

“Service to others is the rent you pay for your room here on earth.”

3. The 15 Most Iconic Muhammad Ali Quotes

Clay Predicts Five Source:Getty

“I am the greatest. I said that even before I knew I was. I figured that if I said it enough, I would convince the world that I really was the greatest.”

4. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali Source:Getty

“Impossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.”

5. The 15 Most Iconic Muhammad Ali Quotes

Cassius Clay Source:Getty

“Frazier is so ugly that he should donate his face to the U.S. Bureau of Wild Life.”

6. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali Knocks Out Liston Source:Getty

“If my mind can conceive it, and my heart can believe it—then I can achieve it.”

7. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali. Cassius Clay. 1968 Source:Getty

“It’s not bragging if you can back it up.”

8. The 15 Most Iconic Muhammad Ali Quotes

BOX-DRCONGO-ALI-FOREMAN-RUMBLE Source:Getty

“The man with no imagination has no wings.”

9. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali and Joe Frazier Press Conference Source:Getty

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

10. The 15 Most Iconic Muhammad Ali Quotes

New York City celebrates Muhammad Ali Day Source:Getty

“I done wrestled with an alligator, I done tussled with a whale; Handcuffed lightning, thrown thunder in jail; Only last week, I murdered a rock, injured a stone, hospitalized a brick; I’m so mean I make medicine sick.”

11. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali Holds Poster For Foreman Bout Source:Getty

“There are many white people who mean right and in their hearts wanna do right. If 10,000 snakes were coming down that aisle now, and I had a door that I could shut, and in that 10,000, 1,000 meant right, 1,000 rattlesnakes didn’t want to bite me, I knew they were good… Should I let all these rattlesnakes come down, hoping that the thousand get together and form a shield?”

12. The 15 Most Iconic Muhammad Ali Quotes

Muhammad Ali In 'The Greatest' Source:Getty

“It’s lack of faith that makes people afraid of meeting challenges, and I believed in myself.”

13. The 15 Most Iconic Muhammad Ali Quotes

Ali's Girls Source:Getty

“A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.”

14. The 15 Most Iconic Muhammad Ali Quotes

Larry Holmes and Muhammad Ali Press Conference Source:Getty

“It isn’t the mountains ahead to climb that wear you out; it’s the pebble in your shoe.”

15. The 15 Most Iconic Muhammad Ali Quotes

2002 ESPY Awards - Arrivals Source:Getty

“Only a man who knows what it is like to be defeated can reach down to the bottom of his soul and come up with the extra ounce of power it takes to win when the match is even.”